7 System Requirements Specification 🔗

ERTMS/ETCS language

REF:	SUBSET-026-7
ISSUE:	4.0.0
DATE:	05/07/2023

Table of Contents 🔗

7.3 Components of ERTMS/ETCS Language
7.4 PACKETS
7.5 Definitions of Variables
- X.X.X Missing subsection

7.1 Modification History 🔗

Issue Number Date	Section Number	Modification / Description	Author
0.0.2 990423	All	Changed according to Siemens comments	OG/DD
1.1.0 990423	All	Class P Official Issue	OG/DD
1.1.1 990525	All	Add review comments UNISIG_All_COM_006_7.d oc	BRO
1.1.2	All	Some minor corrections	SAB
1.1.3	All	First draft for class 1	SAB
1.1.4	All	Update according to review comments	SAB
1.1.5	All	Some minor modifications (see revision marks) + Addition of length of variables in the packets.	OG
1.1.6	Version number and editorial changes.	Finalisation meeting in Stuttgart 990729	HE
1.2.0 990730	Version Number	Release Version	HE
1.2.1 991209	All	Changes according to WPs for SRS upgrade + editorial changes due to ECSAG / UNISIG agreed questions	OG
1.3.0 991217	All	Changed according to review comments	OG
2.0.0 991222	Minor editorial changes	Release version	OG
2.0.1 000926	All	Corrections after UNISIG review 15 June 00	OG
2.1.0 001012	All	Corrections according to “2nisig_all_com_SRS_ 2.0.1” document	OG
2.2.0	Packet 71 deleted, 10 bit NID_C	UNISIG release	SAB
2.2.2	see revision marks	Corrections according to SUBSET -026 Corrected Paragraphs, issue 2.2.2. Mainly, Packet 71 and added Q_NVDRIVER_ADHES	OG
2.2.4 24.05.2004		Update after cross checking and comments from Alain	B. Stamm
2.2.4 SG checked 28/05/04	Including all CLRs agreed with the EEIG (see “List of CLRs agreed with EEIG for SRS v2.2.4” dated 28/05/04) Affected clauses see change marks		H. Kast
2.2.5 04/01/05	Incorporation of solution proposal for CLR 007 with EEIG users group comments		A. Hougardy
2.2.6	Incorporation of all CRs and CLRs submitted to the EEIG until 21.01.2005		B. Stamm
2.2.7	Incorporation of all CRs and CLRs extracted from “CR- Report_10.6.05-by number.rtf” and mentioned in column 2.2.7 in “CR status 13.6.05 _rmk_chap_3_4_220605.xls”		B. Stamm
2.2.8	Change marks cleaned up and updated according to last CRs decisions (including split of CRs7&126)		J. Liesche
2.2.9 24/02/06	Including all CRs that are classified as “IN” as per SUBSET -108 version 1.0.0 Removal of all CRs that are not classified as “IN” as per SUBSET -108 version 1.0.0, with the exception of CRs 63,98,120,158,538		J. Liesche
2.3.0 24/02/06	Release version		HK
2.3.1	Including SG CR decision made since SRS 2.2.8, correct errors in 2.2.8 detected when creating SRS 2.3.0		J. Liesche
2.3.2 17/03/08	Including all CRs that are classified as “IN” as per SUBSET -108 version 1.2.0 and all CRs that are in state “Analysis completed” according to ERA CCM		A. Hougardy
2.9.1 06/10/08	Including all enhancement CR’s retained for 3.0.0 baseline and all other error CR’s that are in state “Analysis completed” according to ERA CCM For editorial reasons, the following CR’s are also included: CR656 , CR804 , CR821		A. Hougardy
3.0.0 23/12/08	Release version	A. Hougardy
3.0.1 22/12/09	Including the results of the editorial review of the SRS 3.0.0 and the other error CR’s that are in state “Analysis completed” according to ERA CCM	A. Hougardy
3.1.0 22/02/10	Release version	A. Hougardy
3.1.1 08/11/10	Including all CR’s that are in state “Analysis completed” according to ERA CCM , plus CR731 , 972 and 1000.	A. Hougardy
3.2.0 22/12/10	Release version	A. Hougardy
3.2.1 13/12/11	Including all CR’s that are in state “Analysis completed” according to ERA CCM .	A. Hougardy
3.3.0 07/03/12	Baseline 3 release version	A. Hougardy
3.3.1 04/04/14	CR 1176	O. Gemine
3.3.2 23/04/14	Baseline 3 1st maintenance pre-release version	O. Gemine
3.3.3 06/05/14	CR 1223 Baseline 3 1st maintenance 2nd pre-release version	O. Gemine
3.4.0 12/05/14	Baseline 3 1st maintenance release version	O. Gemine
3.4.1 23/06/15	CR’s 1164, 1250	O. Gemine
3.4.2 17/11/15	CR’s 299, 1089, 1249, 1262, 1265, 1266, 1280	O. Gemine
3.4.3 16/12/15	1283 plus update due to overall CR consolation phase	O. Gemine
3.5.0 18/12/15	Baseline 3 2nd release version as recommended to EC (see ERA - REC -123-2015/ REC )	O. Gemine
3.5.1 28/04/16	CR 1249 reopening following RISC #75	O. Gemine
3.6.0 13/05/16	Baseline 3 2nd release version	A. Hougardy
3.6.1 29/05/17	CR’s 940, 994, 1252, 1288, 1293	O. Gemine
3.6.2 31/05/18	CR 994 (bad implementation)	O. Gemine
3.6.3 21/02/20	CR’s 1282, 1311, 1313, 1320, 1329, 1334, 1340, 1341	O. Gemine
3.6.4 22/06/20	CR 1334	O. Gemine
3.6.5 22/12/21	CR’s 1238, 1396	O. Gemine
3.6.6 29/08/22	CR’s 940 (updated), 1120, 1342, 1350, 1363, 1367, 1389	O. Gemine
3.9.1 24/11/22	CR’s 988, 1307, 1367(updated), 1397, 1293 (updated), 1425 Outcome of B4R1 1st consolidation phase	O. Gemine A. Hougardy
3.9.2 21/02/23	Outcome of B4R1 2nd consolidation phase	O. Gemine A. Hougardy
3.9.3 31/05/23	CR 1359 Outcome of B4R1 3rd consolidation phase	O. Gemine A. Hougardy
3.9.4 30/06/23	CR 1342 (updated) Outcome of B4R1 4th consolidation phase	O. Gemine A. Hougardy
4.0.0 05/07/23	Baseline 4 1st release version	O. Gemine A. Hougardy

7.3 Components of ERTMS/ETCS Language 🔗

7.3.1 Introduction 🔗

7.3.1.1 The ERTMS / ETCS language is used in transmitting information over the radio, balise and loop airgaps.

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7.3.1.2 The ERTMS / ETCS language is based on variables, packets, messages and telegrams (variables and packets are described in this section, while telegrams and messages are described in chapter 8).

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7.3.1.3 Note: A number of variables contain values which have to be assigned. Some of these values have to be unique to ensure that the system functions properly. A centralised handling of this assignment is therefore required (nationally or internationally, depending on the variable). The variables concerned have been marked. The values included in this document for these variables are therefore not to be used without prior verification of their validity. See SUBSET -054 for further details.

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7.3.2 Definition of Variables 🔗

7.3.2.1 Variables are used to encode single data values. Variables cannot be split in minor units. The whole variable has one type (meaning).

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7.3.2.2 Variables may have special values which are related to the basic meaning of the variable.

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7.3.2.3 Special values have always the highest values in a variable (e.g. 32767 = “unknown”).

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7.3.2.4 Spare values are located between the normal and special values in the variable range

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7.3.2.5 Names of variables are unique. A variable is used in context with the meaning as described in the variable definition. Variables with different meanings have different names.

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7.3.2.6 All variable definitions are independent of the transport media over which they are used, if used in more than one media.

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7.3.2.7 Signed values shall be encoded as 2’s complement.

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7.3.2.8 One bit variables (Boolean) always use 0 for false and 1 for true.

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7.3.2.9 Offsets for numerical values are avoided (0 is used for 0, 1 for 1, etc.) except where justified.

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7.3.2.10 When transmitting over the different transmission media, the most significant bit shall be transmitted first.

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7.3.2.11 All Variables have one of the following prefixes: A_ Acceleration D_ distance G_ Gradient L_ length M_ Miscellaneous N_ Number class number NC_

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NID_PACKET
Q_DIR
L_PACKET
Q_SCALE
......

7.3.3 Definition of Packets 🔗

7.3.3.1 Packets are multiple variables grouped into a single unit, with a defined internal structure.

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7.3.3.2 This structure consists of a packet header with: • Track to Train: a unique packet number, the length of the packet in bits, the orientation information, optionally the scale for distance/length information and an information section containing a defined set of variables. The packet structure is as follows: Number Packet identifier Direction Specifies the validity direction of transmitted data Length Number of bits in the packet Scale Specifies which scale is used for distance/length information within the packet. There is no variable in packets which do not contain distance information. Information ...... Well defined set(s) of variables. • Train to Track: a unique packet number, the length of the packet in bits, optionally the distance scale and an information section containing a defined set of variables. The packet structure is as follows: Number Packet identifier Length Number of bits in the packet Scale Specifies which scale is used for distance/length information within the packet. There is no variable in packets which do not contain distance information. Information ...... Well defined set(s) of variables. NID_PACKET Q_DIR L_PACKET Q_SCALE Q_SCALE NID_PACKET L_PACKET Q_SCALE Q_SCALE

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NID_PACKET
L_PACKET
Q_SCALE

7.3.3.3 The packet definition does not change when transmitted over different transmission media.

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7.3.3.4 All packet identifiers not listed in 7.4.1.1 shall be considered as invalid values (i.e. like spare values) when received by the on-board equipment. Exception: reception of information only differing by Y with regards to the highest system version number X supported by on-board (refer to section 3.17.3.11).

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7.3.3.4.1 Note: Depending on the system version number with which the message/telegram was transmitted relevant exception from chapter 6 may apply regarding 7.4.1.1.

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7.3.3.5 Exception: Packet 0 “Virtual Balise Cover marker” and Packet 255: “End of Telegram” do not follow the above defined structure.

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7.3.3.6 specifies the number of iterations of a variable or group of variables which follow. N_ITER

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7.3.3.7 If is 0 then no variables follow. N_ITER

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7.3.3.8 Two or more nested levels of iterations can exist.

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7.3.3.9 If, depending on the value of a previous qualifier variable in the packet, a variable is optional, it is written indented in the packet definition

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7.3.3.10 Row “Transmitted by” in the description of a packet specifies which ERTMS / ETCS trackside device (balise, loop, RIU , RBC ) can transmit this packet. “Any” means that the packet can be transmitted by a balise, a loop, an RBC and a RIU .

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7.3.3.10.1 Row “Transmitted to” in the description of a packet specifies to which ERTMS / ETCS trackside device the packet can be transmitted.

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7.4 PACKETS 🔗

7.4.1 List of Packets 🔗

7.4.1.1 Track to Train

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Packet Number	Packet Name	Page N°
0	Virtual Balise Cover marker	12
2	System Version order	12
3	National Values	12
5	Linking	15
6	Virtual Balise Cover order	16
12	Level 1 Movement Authority	16
13	Staff Responsible distance information from loop	18
15	Level 2 Movement Authority	18
16	Repositioning Information	19
21	Gradient Profile	19
27	International Static Speed Profile	20
31	RBC transition order for RBC interfaced to FRMCS only	20
32	Session management for RBC interfaced to FRMCS only	21
39	Track Condition Change of traction system	21
40	Track Condition Change of allowed current consumption	21
41	Level Transition Order	22
42	Session Management for RBC interfaced to GSM -R	22
44	Data used by applications outside the ERTMS / ETCS system.	23
45	Radio Network transition order	23
46	Conditional Level Transition Order	23
49	List of Balise Groups for SH Area	24
51	Axle load Speed Profile	24
52	Permitted Braking Distance Information	25
57	Movement Authority Request Parameters	26
58	Position Report Parameters	26
63	List of Balise Groups in SR Authority	26
64	Inhibition of revocable TSRs from balises in level 2	27
65	Temporary Speed Restriction	27
66	Temporary Speed Restriction Revocation	27
67	Track Condition Big Metal Masses	27
68	Track Condition	28
69	Track Condition Station Platforms	28
70	Route Suitability Data	29
71	Adhesion Factor	30
73	Packet for sending plain text messages	30
74	Packet for sending fixed text messages	31
79	Geographical Position Information	32
80	Mode profile	33
88	Level crossing information	33
Packet Number	Packet Name	Page N°
90	Track Ahead Free up to level 2 transition location	34
131	RBC transition order for RBC interfaced to GSM -R	34
132	Danger for Shunting information	34
133	Radio infill area information	35
134	EOLM Packet	35
135	Stop Shunting on desk opening	35
136	Infill location reference	36
137	Stop if in Staff Responsible	36
138	Reversing area information	36
139	Reversing supervision information	37
140	Train running number from RBC	37
141	Default Gradient for Temporary Speed Restriction	37
143	Session Management with neighbouring Radio Infill Unit	37
145	Inhibition of balise group message consistency reaction	38
180	LSSMA display toggle order	38
181	Generic LS function marker	38
254	Default balise, loop or RIU information	39
255	End of Information	39

7.4.1.2 Train to Track

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Packet Number	Packet Name	Page N°
0	Position Report	40
1	Position Report based on two balise groups	40
2	Onboard supported system versions	41
4	Error Reporting	41
5	Train running number	42
9	Level 2 transition information	42
10	Safe consist length information for Supervised Manoeuvre	42
11	Validated train data	42
12	Default train data for Supervised Manoeuvre	43
44	Data used by applications outside the ERTMS / ETCS system.	44

7.4.1.3 Intentionally deleted

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7.4.2 PACKETS: TRACK TO TRAIN 🔗

7.4.2.0 Packet Number 0: Virtual Balise Cover marker

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Description	Indication to on-board that the telegram can be ignored according to a VBC
Transmitted by	Balise
Content	Variable	Length	Comment
	NID_PACKET	8
	NID_VBCMK	6

7.4.2.1 Packet Number 2: System Version order

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Description	This packet is used to tell the on-board which is the operated system version
Transmitted by	Balise
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	M_VERSION	7

7.4.2.1.1 Packet Number 3: National Values

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Description	Downloads a set of National Values to the train
Transmitted by	Balise, RBC
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_VALIDNV	15
	NID_C	10	Identification of national areas to which the set applies
	N_ITER	5
	(k) NID_C	10	Identification of additional national area(s) to which the set applies
	V_NVSHUNT	7
	V_NVSTFF	7
	V_NVONSIGHT	7
	V_NVLIMSUPERV	7
	V_NVUNFIT	7
	V_NVREL	7
	D_NVROLL	15
	Q_NVSBTSMPERM	1
	Q_NVEMRRLS	1
	Q_NVGUIPERM	1
	Q_NVSBFBPERM	1
	Q_NVINHSMICPERM	1
	V_NVALLOWOVTRP	7
	V_NVSUPOVTRP	7
	D_NVOVTRP	15
	T_NVOVTRP	8
	D_NVPOTRP	15
	M_NVCONTACT	2
	T_NVCONTACT	8
	M_NVDERUN	1
	D_NVSTFF	15
	Q_NVDRIVER_ADHES	1
	A_NVMAXREDADH1	6
	A_NVMAXREDADH2	6
	A_NVMAXREDADH3	6
	Q_NVLOCACC	6
	M_NVAVADH	5
	M_NVEBCL	4
	Q_NVKINT	1
	Q_NVKVINTSET	2	Only if = 1, and the following variables follow Q_NVKINT Q_NVKVINTSET
	A_NVP12	6	Only if = 1 Q_NVKVINTSET
	A_NVP23	6	Only if = 1 Q_NVKVINTSET
	V_NVKVINT	7	= 0 km/h
	M_NVKVINT	7	Valid between and (1) If = 1, gives the correction factor if maximum emergency brake deceleration is lower than V_NVKVINT V_NVKVINT Q_NVKVINTSET A_NVP12
	M_NVKVINT	7	Only if = 1 Valid between and (1) Gives the correction factor if maximum emergency brake deceleration is higher than Q_NVKVINTSET V_NVKVINT V_NVKVINT A_NVP23
	N_ITER	5
	(n) V_NVKVINT	7
	(n) M_NVKVINT	7	Valid between (n) and (n+1) If = 1, gives the correction factor if maximum emergency brake deceleration is lower than V_NVKVINT V_NVKVINT Q_NVKVINTSET A_NVP12
	(n) M_NVKVINT	7	Only if = 1 Valid between (n) and (n+1) Gives the correction factor if maximum emergency brake deceleration is higher than Q_NVKVINTSET V_NVKVINT V_NVKVINT A_NVP23
	N_ITER	5
	(k) Q_NVKVINTSET	2
	(k) A_NVP12	6	Only if (k) = 1 Q_NVKVINTSET
	(k) A_NVP23	6	Only if (k) = 1 Q_NVKVINTSET
	(k) V_NVKVINT	7	= 0km/h
	(k) M_NVKVINT	7	Valid between (k) and (k,1) If (k) = 1, gives the correction factor if maximum emergency brake deceleration is lower than (k) V_NVKVINT V_NVKVINT Q_NVKVINTSET A_NVP12
	(k) M_NVKVINT	7	Only if (k) = 1 Valid between (k) and (k,1) Gives the correction factor if maximum emergency brake deceleration is higher than (k) Q_NVKVINTSET V_NVKVINT V_NVKVINT A_NVP23
	(k) N_ITER	5
	(k,m) V_NVKVINT	7
	(k,m) M_NVKVINT	7	Valid between (k,m) and (k,m+1) If (k) = 1, gives the correction factor if maximum emergency brake deceleration is lower than (k) V_NVKVINT V_NVKVINT Q_NVKVINTSET A_NVP12
	(k,m) M_NVKVINT	7	Only if (k) = 1 Valid between (k,m) and (k,m+1) Gives the correction factor if maximum emergency brake deceleration is higher than (k) Q_NVKVINTSET V_NVKVINT V_NVKVINT A_NVP23
	L_NVKRINT	5	= 0m
	M_NVKRINT	5	Valid between and (1) L_NVKRINT L_NVKRINT
	N_ITER	5
	(l) L_NVKRINT	5
	(l) M_NVKRINT	5	Valid between (l) and (l+1) L_NVKRINT L_NVKRINT
	M_NVKTINT	5

7.4.2.2 Packet Number 5: Linking

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Description	Linking Information.
Transmitted by	Any
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_LINK	15
	Q_NEWCOUNTRY	1
	NID_C	10	if = 1 Q_NEWCOUNTRY
	NID_BG	14
	Q_LINKORIENTATION	1
	Q_LINKREACTION	2
	Q_LOCACC	6
	N_ITER	5
	(k) D_LINK	15
	(k) Q_NEWCOUNTRY	1
	(k) NID_C	10	if (k) = 1 Q_NEWCOUNTRY
	(k) NID_BG	14
	(k) Q_LINKORIENTATION	1
	(k) Q_LINKREACTION	2
	(k) Q_LOCACC	6

7.4.2.2.1 Packet Number 6: Virtual Balise Cover order

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Description	The packet sets/removes a Virtual Balise Cover.
Transmitted by	Balise
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_VBCO	1
	NID_VBCMK	6
	NID_C	10
	T_VBC	8	Only if = 1 Q_VBCO

7.4.2.3 Packet Number 12: Level 1 Movement Authority

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Description	Transmission of a movement authority for level 1.
Transmitted by	Balise, loop, RIU
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	V_MAIN	7
	V_EMA	7
	T_EMA	10	Can be set to “no time-out”
	N_ITER	5	Set to zero if = 0 or if only one section in the MA V_MAIN
	(k) L_SECTION	15
	(k) Q_SECTIONTIMER	1
	(k) T_SECTIONTIMER	10
	(k) D_SECTIONTIMERSTOPLOC	15
	L_ENDSECTION	15
	Q_SECTIONTIMER	1
	T_SECTIONTIMER	10
	D_SECTIONTIMERSTOPLOC	15
	Q_ENDTIMER	1
	T_ENDTIMER	10
	D_ENDTIMERSTARTLOC	15
	Q_DANGERPOINT	1
	D_DP	15
	V_RELEASEDP	7
	Q_OVERLAP	1
	D_STARTOL	15
	T_OL	10
	D_OL	15
	V_RELEASEOL	7

7.4.2.3.1 Packet Number 13: Staff Responsible distance Information from loop

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Description	Information for trains in staff responsible mode
Transmitted by	Loop
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	Q_NEWCOUNTRY	1
	NID_C	10	If = 1 Q_NEWCOUNTRY
	NID_BG	14	Main signal balise group
	Q_NEWCOUNTRY	1
	NID_C	10	If = 1 Q_NEWCOUNTRY
	NID_BG	14	Reference balise
	D_SR	15
	N_ITER	5
	(k) Q_NEWCOUNTRY	1
	(k) NID_C	10	If (k) = 1 Q_NEWCOUNTRY
	(k) NID_BG	14	Reference balise
	(k) D_SR	15

7.4.2.4 Packet Number 15: Level 2 Movement Authority

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Description	Transmission of a movement authority for level 2.
Transmitted by	RBC
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	V_EMA	7
	T_EMA	10	Can be set to “no time-out”
	N_ITER	5	Set to zero if only one section in the MA
	(k) L_SECTION	15
	(k) Q_SECTIONTIMER	1
	(k) T_SECTIONTIMER	10
	(k) D_SECTIONTIMERSTOPLOC	15
	L_ENDSECTION	15
	Q_SECTIONTIMER	1
	T_SECTIONTIMER	10
	D_SECTIONTIMERSTOPLOC	15
	Q_ENDTIMER	1
	T_ENDTIMER	10
	D_ENDTIMERSTARTLOC	15
	Q_DANGERPOINT	1
	D_DP	15
	V_RELEASEDP	7
	Q_OVERLAP	1
	D_STARTOL	15
	T_OL	10
	D_OL	15
	V_RELEASEOL	7

7.4.2.5 Packet Number 16: Repositioning Information

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Description	Transmission of the update of an MA section
Transmitted by	Balise
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	L_SECTION	15

7.4.2.6 Packet Number 21: Gradient Profile

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Description	Transmission of the gradient.
Transmitted by	Any
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_GRADIENT	15
	Q_GDIR	1	0 = downhill 1= uphill
	G_A	8
	N_ITER	5
	(k) D_GRADIENT	15
	(k) Q_GDIR	1	0 = downhill 1= uphill
	(k) G_A	8

7.4.2.7 Packet Number 27: International Static Speed Profile

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Description	Static speed profile and optionally speed limits depending on the international train category.
Transmitted by	Any
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_STATIC	15
	V_STATIC	7	Basic SSP
	Q_FRONT	1
	N_ITER	5
	(n) Q_DIFF	2
	(n) NC_CDDIFF	4	If (n) = 0 Q_DIFF
	(n) NC_DIFF	4	If (n) = 1 or 2 Q_DIFF
	(n) V_DIFF	7
	N_ITER	5
	(k) D_STATIC	15
	(k) V_STATIC	7	Basic SSP
	(k) Q_FRONT	1
	(k) N_ITER	5
	(k,m) Q_DIFF	2
	(k,m) NC_CDDIFF	4	If (k,m) = 0 Q_DIFF
	(k,m) NC_DIFF	4	If (k,m) = 1 or 2 Q_DIFF
	(k,m) V_DIFF	7

7.4.2.7.1 Packet Number 31: RBC transition order for RBC interfaced to FRMCS only

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Description	Packet to order an RBC transition
Transmitted by	Balise, RBC
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_RBCTR	15
	NID_C	10	“Accepting” RBC identity
	NID_RBC	14
	Q_SLEEPSESSION	1

7.4.2.7.2 Packet Number 32: Session Management for RBC interfaced to FRMCS only

🔗

Description	Packet to give the identity of the RBC with which a session shall be established or terminated.
Transmitted by	Balise, RBC
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_RBC	1
	NID_C	10	RBC ETCS identity : not relevant if has value “Contact last known RBC ” NID_C NID_RBC
	NID_RBC	14
	Q_SLEEPSESSION	1

7.4.2.8 Packet Number 39: Track Condition Change of traction system

🔗

Description	The packet gives information about change of the traction system.
Transmitted by	Any
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_TRACTION	15
	M_VOLTAGE	4	Identity of the traction system given only if ≠ 0 NID_CTRACTION M_VOLTAGE
	NID_CTRACTION	10

7.4.2.8.1 Packet Number 40: Track Condition Change of allowed current consumption

🔗

Description	The packet gives information about change of the allowed current consumption.
Transmitted by	Any
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_CURRENT	15
	M_CURRENT	10	Allowed current consumption.

7.4.2.9 Packet Number 41: Level Transition Order

🔗

Description	Packet to identify where a level transition shall take place. In case of mixed levels, the successive M_LEVELTR’s go from the highest priority level to the lowest one.
Transmitted by	Any
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_LEVELTR	15
	M_LEVELTR	3
	NID_NTC	8	If = 1 ( NTC ) M_LEVELTR
	L_ACKLEVELTR	15
	N_ITER	5
	(k) M_LEVELTR	3
	(k) NID_NTC	8	If (k) = 1 ( NTC ) M_LEVELTR
	(k) L_ACKLEVELTR	15

7.4.2.10 Packet Number 42: Session Management for RBC interfaced to GSM -R

🔗

Description	Packet to give the identity and telephone number of the RBC with which a session shall be established or terminated.
Transmitted by	Balise, RBC
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_RBC	1
	NID_C	10
	NID_RBC	14
	NID_RADIO	64	not relevant if has value “Contact last known RBC ” NID_RBC
	Q_SLEEPSESSION	1

7.4.2.11 Packet Number 44: Data used by applications outside the ERTMS / ETCS system.

🔗

Description	Messages between trackside and on-board devices, which contain information used by applications outside the ERTMS/ETCS system.
Transmitted by	Any
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	NID_XUSER	9
	NID_NTC	8	Only if = 102 (National System functions) NID_XUSER
	Other data, depending on and, in case = 102, also on NID_XUSER NID_XUSER NID_NTC

7.4.2.11.1 Packet Number 45: Radio Network transition order

🔗

Description	Packet to give the Radio Network type and, if any, the GSM-R Radio Network identity.
Transmitted by	Balise, RBC , RIU
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_NETWORKTYPE	2
	NID_MN	24	If = 1 or 2 Q_NETWORTYPE

7.4.2.11.2 Packet Number 46: Conditional Level Transition Order

🔗

Description	Packet for a conditional level transition. The successive M_LEVELTR’s go from the highest priority level to the lowest one.
Transmitted by	Balise
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	M_LEVELTR	3
	NID_NTC	8	If = 1 ( NTC ) M_LEVELTR
	N_ITER	5
	(k) M_LEVELTR	3
	(k) NID_NTC	8	If (k) = 1 ( NTC ) M_LEVELTR

7.4.2.12 Packet Number 49: List of Balise Groups for SH Area

🔗

Description	Used to list balise group(s) which the train can pass over in SH mode
Transmitted by	Any
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	N_ITER	5
	(k) Q_NEWCOUNTRY	1
	(k) NID_C	10	if (k) = 1 Q_NEWCOUNTRY
	(k) NID_BG	14

7.4.2.13 Packet Number 51: Axle Load Speed Profile

🔗

Description	This packet gives the axle load speed restrictions
Transmitted by	Any
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	Q_TRACKINIT	1
	D_TRACKINIT	15	Only if = 1 Q_TRACKINIT
	D_AXLELOAD	15	Only if = 0, and the following variables follow Q_TRACKINIT D_AXLELOAD
	L_AXLELOAD	15
	Q_FRONT	1
	N_ITER	5
	(n) M_AXLELOADCAT	7
	(n) V_AXLELOAD	7	Speed restriction to be applied if the axle load category of the train = (n) M_AXLELOADCAT
	N_ITER	5
	(k) D_AXLELOAD	15
	(k) L_AXLELOAD	15
	(k) Q_FRONT	1
	(k) N_ITER	5
	(k,m) M_AXLELOADCAT	7
	(k,m) V_AXLELOAD	7	Speed restriction to be applied if the axle load category of the train = (k,m) M_AXLELOADCAT

7.4.2.13.1 Packet Number 52: Permitted Braking Distance Information

🔗

Description	This packet requests the on-board calculation of speed restrictions which ensure a given permitted brake distance in case of an EB, or SB, intervention
Transmitted by	Any
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	Q_TRACKINIT	1
	D_TRACKINIT	15	Only if = 1 Q_TRACKINIT
	D_PBD	15	Only if = 0, and the following variables follow Q_TRACKINIT D_PBD
	Q_GDIR	1	0 = downhill, 1 = uphill
	G_PBDSR	8	Gradient value to be used for the calculation
	Q_PBDSR	1
	D_PBDSR	15
	L_PBDSR	15
	N_ITER	5
	(k) D_PBD	15
	(k) Q_GDIR	1	0 = downhill, 1 = uphill
	(k) G_PBDSR	8	Gradient value to be used for the calculation
	(k) Q_PBDSR	1
	(k) D_PBDSR	15
	(k) L_PBDSR	15

7.4.2.14 Packet Number 57: Movement Authority Request Parameters

🔗

Description	This packet is intended to give parameters telling when and how often the train has to ask for a movement authority.
Transmitted by	RBC
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	T_MAR	8
	T_TIMEOUTRQST	10
	T_CYCRQST	8

7.4.2.15 Packet Number 58: Position Report Parameters

🔗

Description	This packet is intended to give parameters telling when and how often the position has to be reported.
Transmitted by	RBC
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	T_CYCLOC	8
	D_CYCLOC	15
	M_LOC	3
	N_ITER	5
	(k) D_LOC	15
	(k) Q_LGTLOC	1

7.4.2.16 Packet Number 63: List of Balise Groups in SR Authority

🔗

Description	Used to list balise group(s) which the train can pass over in SR mode
Transmitted by	RBC
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	N_ITER	5
	(k) Q_NEWCOUNTRY	1
	(k) NID_C	10	if (k) = 1 Q_NEWCOUNTRY
	(k) NID_BG	14

7.4.2.16.1 Packet Number 64: Inhibition of revocable TSRs from balises in level 2

🔗

Description	This packet is used to inhibit revocable TSRs from balises in level 2.
Transmitted by	RBC
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13

7.4.2.17 Packet Number 65: Temporary Speed Restriction

🔗

Description	Transmission of temporary speed restriction.
Transmitted by	Any
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	NID_TSR	8
	D_TSR	15
	L_TSR	15
	Q_FRONT	1
	V_TSR	7

7.4.2.18 Packet Number 66: Temporary Speed Restriction Revocation

🔗

Description	Transmission of temporary speed restriction revocation.
Transmitted by	Balise, RBC
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	NID_TSR	8	Identity of TSR to be revoked

7.4.2.19 Packet Number 67: Track Condition Big Metal Masses

🔗

Description	The packet gives details concerning where to ignore integrity check alarms of balise transmission due to big metal masses trackside.
Transmitted by	Balise, RBC
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_TRACKCOND	15
	L_TRACKCOND	15	The distance for which integrity check alarms of balise transmission shall be ignored
	N_ITER	5
	(k) D_TRACKCOND	15
	(k) L_TRACKCOND	15	The distance for which integrity check alarms of balise transmission shall be ignored

7.4.2.20 Packet Number 68: Track Condition

🔗

Description	The packet gives details concerning the track ahead to support the driver when e.g. lower pantograph
Transmitted by	Any
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	Q_TRACKINIT	1
	D_TRACKINIT	15	Only if = 1 Q_TRACKINIT
	D_TRACKCOND	15	Only if = 0, and the following variables follow Q_TRACKINIT D_TRACKCOND
	L_TRACKCOND	15
	M_TRACKCOND	4
	N_ITER	5
	(k) D_TRACKCOND	15
	(k) L_TRACKCOND	15
	(k) M_TRACKCOND	4

7.4.2.20.1 Packet Number 69: Track Condition Station Platforms

🔗

Description	The packet gives details concerning the location and height of station platforms for use by the train’s door control system
Transmitted by	Any
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	Q_TRACKINIT	1
	D_TRACKINIT	15	Only if = 1 Q_TRACKINIT
	D_TRACKCOND	15	Only if = 0, and the following variables follow Q_TRACKINIT D_TRACKCOND
	L_TRACKCOND	15
	M_PLATFORM	4
	Q_PLATFORM	2
	N_ITER	5
	(k) D_TRACKCOND	15
	(k) L_TRACKCOND	15
	(k) M_PLATFORM	4
	(k) Q_PLATFORM	2

7.4.2.21 Packet Number 70: Route Suitability Data

🔗

Description	The packet gives the characteristics needed to enter a route.
Transmitted by	Any
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	Q_TRACKINIT	1
	D_TRACKINIT	15	Only if = 1 Q_TRACKINIT
	D_SUITABILITY	15	Only If = 0, and the following variables follows Q_TRACKINIT D_SUITABILITY
	Q_SUITABILITY	2
	M_LINEGAUGE	8	If = loading gauge Q_SUITABILITY
	M_LINEAXLELOADCAT	16	If = axle load. Q_SUITABILITY
	M_VOLTAGE	4	If = traction system Q_SUITABILITY
	NID_CTRACTION	10	If = traction system and ≠0 Q_SUITABILITY M_VOLTAGE
	N_ITER	5
	(k) D_SUITABILITY	15
	(k) Q_SUITABILITY	2
	(k) M_LINEGAUGE	8	If (k) = loading gauge Q_SUITABILITY
	(k) M_LINEAXLELOADCAT	16	If (k) = axle load. Q_SUITABILITY
	(k) M_VOLTAGE	4	If (k) = traction system Q_SUITABILITY
	(k) NID_CTRACTION	10	If (k) = traction system and (k) ≠0 Q_SUITABILITY M_VOLTAGE

7.4.2.22 Packet number 71: Adhesion factor

🔗

Description	This packet is used when the trackside requests a change of the adhesion factor to be used in the brake model.
Transmitted by	Any
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_ADHESION	15
	L_ADHESION	15
	M_ADHESION	1

7.4.2.23 Packet Number 73: Packet for sending plain text messages

🔗

Description
Transmitted by	Balise, RBC
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	Q_TEXTCLASS	2
	Q_TEXTDISPLAY	1	Start/end sub-conditions relation
	D_TEXTDISPLAY	15	Start sub-condition
	M_MODETEXTDISPLAY	4	Start sub-condition
	M_LEVELTEXTDISPLAY	3	Start sub-condition
	NID_NTC	8	If = 1 ( NTC ) M_LEVELTEXTDISPLAY
	L_TEXTDISPLAY	15	End sub-condition
	T_TEXTDISPLAY	10	End sub-condition
	M_MODETEXTDISPLAY	4	End sub-condition
	M_LEVELTEXTDISPLAY	3	End sub-condition
	NID_NTC	8	If = 1 ( NTC ) M_LEVELTEXTDISPLAY
	Q_TEXTCONFIRM	2
	Q_CONFTEXTDISPLAY	1	If ≠ 0 Q_TEXTCONFIRM
	Q_TEXTREPORT	1	If ≠ 0 Q_TEXTCONFIRM
	NID_TEXTMESSAGE	8	Only If = 1 Q_TEXTREPORT
	NID_C	10	Only If = 1 Q_TEXTREPORT
	NID_RBC	14	Only If = 1 Q_TEXTREPORT
	L_TEXT	8
	( ) X_TEXT L_TEXT	8

7.4.2.24 Packet Number 74: Packet for sending fixed text messages

🔗

Description
Transmitted by	Balise, RBC
	Variable	Lengt h	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	Q_TEXTCLASS	2
	Q_TEXTDISPLAY	1	Start/end sub-conditions relation
	D_TEXTDISPLAY	15	Start sub-condition
	M_MODETEXTDISPLAY	4	Start sub-condition
	M_LEVELTEXTDISPLAY	3	Start sub-condition
	NID_NTC	8	If = 1 ( NTC ) M_LEVELTEXTDISPLAY
	L_TEXTDISPLAY	15	End sub-condition
	T_TEXTDISPLAY	10	End sub-condition
	M_MODETEXTDISPLAY	4	End sub-condition
	M_LEVELTEXTDISPLAY	3	End sub-condition
	NID_NTC	8	If = 1 ( NTC ) M_LEVELTEXTDISPLAY
	Q_TEXTCONFIRM	2
	Q_CONFTEXTDISPLAY	1	If ≠ 0 Q_TEXTCONFIRM
	Q_TEXTREPORT	1	If ≠ 0 Q_TEXTCONFIRM
	NID_TEXTMESSAGE	8	Only If = 1 Q_TEXTREPORT
	NID_C	10	Only If = 1 Q_TEXTREPORT
	NID_RBC	14	Only If = 1 Q_TEXTREPORT
	Q_TEXT	8

7.4.2.25 Packet Number 79: Geographical Position Information

🔗

Description	This packet gives geographical location information for one or multiple references to the train.
Transmitted by	Balise, RBC
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	Q_NEWCOUNTRY	1
	NID_C	10	if = 1 Q_NEWCOUNTRY
	NID_BG	14	Geographical Position Reference Balise Group
	D_POSOFF	15
	Q_MPOSITION	1	Geographical Position counting direction
	M_POSITION	24	Track kilometre reference value
	N_ITER	5
	(k) Q_NEWCOUNTRY	1
	(k) NID_C	10	if (k) = 1 Q_NEWCOUNTRY
	(k) NID_BG	14	Geographical Position Reference Balise Group
	(k) D_POSOFF	15
	(k) Q_MPOSITION	1	Geographical Position counting direction
	(k) M_POSITION	24	Track kilometre reference value

7.4.2.26 Packet Number 80: Mode profile

🔗

Description	Mode profile associated to an MA
Transmitted by	Any
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_MAMODE	15
	M_MAMODE	2	OS, LS, SH
	V_MAMODE	7
	L_MAMODE	15
	L_ACKMAMODE	15
	Q_MAMODE	1
	N_ITER	5
	(k) D_MAMODE	15
	(k) M_MAMODE	2	OS, LS, SH
	(k) V_MAMODE	7
	(k) L_MAMODE	15
	(k) L_ACKMAMODE	15
	(k) Q_MAMODE	1

7.4.2.26.1 Packet Number 88: Level Crossing information

🔗

Description	Level Crossing information
Transmitted by	Any
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	NID_LX	8
	D_LX	15
	L_LX	15
	Q_LXSTATUS	1
	V_LX	7	Only if = 1 Q_LXSTATUS
	Q_STOPLX	1	Only if = 1 Q_LXSTATUS
	L_STOPLX	15	Only if = 1 Q_STOPLX

7.4.2.26.2 Packet Number 90: Track Ahead Free up to level 2 transition location

🔗

Description	Notification to on-board that track ahead is free from the balise group transmitting this information up to the level 2 transition location
Transmitted by	Balise
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_NEWCOUNTRY	1
	NID_C	10	If = 1 Q_NEWCOUNTRY
	NID_BG	14	Level 2 transition location balise group

7.4.2.27 Packet Number 131: RBC transition order for RBC interfaced to GSM -R

🔗

Description	Packet to order an RBC transition
Transmitted by	Balise, RBC
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_RBCTR	15
	NID_C	10	“Accepting” RBC identity
	NID_RBC	14
	NID_RADIO	64	“Accepting” RBC radio subscriber number
	Q_SLEEPSESSION	1

7.4.2.28 Packet Number 132: Danger for Shunting information

🔗

Description	Transmission of the aspect of a shunting signal
Transmitted by	Balise
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_ASPECT	1

7.4.2.29 Packet Number 133: Radio infill area information

🔗

Description
Transmitted by	Balise
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	Q_RIU	1
	NID_C	10	RIU ETCS identity
	NID_RIU	14
	NID_RADIO	64
	D_INFILL	15
	NID_C	10	Refers to the next main signal balise group (relevant only for the case of establishing a communication session)
	NID_BG	14

7.4.2.30 Packet Number 134: EOLM Packet

🔗

Description	This packet announces a loop.
Transmitted by	Balise
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	NID_LOOP	14
	D_LOOP	15
	L_LOOP	15
	Q_LOOPDIR	1
	Q_SSCODE	4

7.4.2.31 Packet Number 135: Stop Shunting on desk opening

🔗

Description	Packet to stop Shunting on desk opening.
Transmitted by	Balise
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13

7.4.2.32 Packet Number 136: Infill location reference

🔗

Description	Defines location reference for all data contained in the same radio message or balise/loop telegram respectively, following this packet.
Transmitted by	Balise, loop, RIU
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_NEWCOUNTRY	1
	NID_C	10	If = 1 Q_NEWCOUNTRY
	NID_BG	14

7.4.2.33 Packet Number 137: Stop if in Staff Responsible

🔗

Description	Information to stop a train in staff responsible.
Transmitted by	Balise
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SRSTOP	1

7.4.2.34 Packet Number 138: Reversing area information

🔗

Description	Used to send start and length of reversing area to the on-board
Transmitted by	Any
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_STARTREVERSE	15
	L_REVERSEAREA	15

7.4.2.35 Packet Number 139: Reversing supervision information

🔗

Description	Used to send supervision parameters (distance to run, speed) of reversing area to the on-board
Transmitted by	Any
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_SCALE	2
	D_REVERSE	15
	V_REVERSE	7

7.4.2.36 Packet Number 140: Train running number from RBC

🔗

Description	Train running number from RBC
Transmitted by	RBC
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	NID_OPERATIONAL	32

7.4.2.37 Packet Number 141: Default Gradient for Temporary Speed Restriction

🔗

Description	It defines a default gradient to be used for TSR supervision when no gradient profile (packet 21) is available
Transmitted by	Balise
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_GDIR	1	0 = downhill 1= uphill
	G_TSR	8

7.4.2.37.1 Packet Number 143: Session Management with neighbouring Radio Infill Unit

🔗

Description	Packet to give the identity and telephone number of the neighbouring Radio Infill Unit with which a session shall be established or terminated.
Transmitted by	RIU
	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_RIU	1
	NID_C	10	RIU ETCS identity
	NID_RIU	14
	NID_RADIO	64

7.4.2.37.2 Packet Number 145: Inhibition of balise group message consistency reaction

🔗

Description	Indication to on-board that the balise group message consistency reaction (service brake command) can be inhibited for this balise group message only, in case one or more balise telegram(s) of the group is/are missed or is/are detected but not decoded.
Transmitted by	Balise
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13

7.4.2.37.3 Packet Number 180: LSSMA display toggle order

🔗

Description	Used to toggle on/off the display of the Lowest Supervised Speed within the MA.
Transmitted by	Any
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13
	Q_LSSMA	1
	T_LSSMA	8	Only if = 1 Q_LSSMA

7.4.2.37.4 Packet Number 181: Generic LS function marker

🔗

Description	Used to enable the generic toggling on/off of the display of the Lowest Supervised Speed within the MA.
Transmitted by	Balise
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13

7.4.2.38 Packet Number 254: Default balise, loop or RIU information

🔗

Description	Indication to on-board that balise telegram, loop message or RIU information contains default information due to a fault of the trackside equipment.
Transmitted by	Balise, loop, RIU
Content	Variable	Length	Comment
	NID_PACKET	8
	Q_DIR	2
	L_PACKET	13

7.4.2.39 Packet Number 255: End of Information

🔗

Description	This packet consists only of NID_PACKET containing 8 bit 1s It acts as a finish flag; the receiver will stop reading the remaining part of the message/telegram when receiving eight bits set to one in the NID_PACKET field.
Transmitted by	Balise, Loop
Content	Variable	Length	Comment
	NID_PACKET	8	= 255 (1111 1111)

7.4.3 PACKETS: TRAIN TO TRACK 🔗

7.4.3.1 Packet Number 0: Position Report

🔗

Description	This packet is used to report the train position and speed as well as some additional information (e.g. mode, level, etc.)
Transmitted to	RBC , RIU
Content	Variable	Length	Comment
	NID_PACKET	8
	L_PACKET	13
	Q_SCALE	2
	NID_LRBG	10 + 14
	D_LRBG	15
	Q_DIRLRBG	2
	Q_DLRBG	2
	L_DOUBTOVER	15
	L_DOUBTUNDER	15
	Q_INTEGRITY	2
	L_TRAININT	15	If = “Train integrity confirmed by external source” or “Train integrity confirmed by driver” Q_INTEGRITY
	V_TRAIN	7
	Q_DIRTRAIN	2
	M_MODE	5
	M_LEVEL	3
	NID_NTC	8	If = NTC M_LEVEL

7.4.3.2 Packet Number 1: Position Report based on two balise groups

🔗

Description	This packet is an extension of the “standard position report “ packet 0. It is used in case of single balise groups if the orientation of the LRBG is unknown but the on-board equipment is able to report a second balise group (the one detected before) to give a direction reference for the directional information in the position report.
Transmitted to	RBC , RIU
	Variable	Length	Comment
	NID_PACKET	8
	L_PACKET	13
	Q_SCALE	2
	NID_LRBG	10 + 14
	NID_PRVLRBG	10 + 14	Used as reference for all directional information in the packet: a move from PRVLRBG towards the LRBG defines the “nominal” direction
	D_LRBG	15
	Q_DIRLRBG	2	Train orientation according to reference direction
	Q_DLRBG	2	Train front position according to reference direction
	L_DOUBTOVER	15
	L_DOUBTUNDER	15
	Q_INTEGRITY	2
	L_TRAININT	15	If = “Train integrity confirmed by external source” or “Train integrity confirmed by driver” Q_INTEGRITY
	V_TRAIN	7
	Q_DIRTRAIN	2	Actual running direction according to reference direction
	M_MODE	5
	M_LEVEL	3
	NID_NTC	8	If = NTC M_LEVEL

7.4.3.3 Packet Number 2: Onboard supported system versions

🔗

Description	System versions that the on-board equipment is able to operate
Transmitted to	RBC , RIU
Content	Variable	Length	Comment
	NID_PACKET	8
	L_PACKET	13
	M_VERSION	7
	N_ITER	5
	(k) M_VERSION	7

7.4.3.4 Packet Number 4: Error reporting

🔗

Description	Error reporting to the RBC
Transmitted to	RBC
Content	Variable	Length	Comment
	NID_PACKET	8
	L_PACKET	13
	M_ERROR	8	error type identifier

7.4.3.4.1 Packet Number 5: Train running number

🔗

Description	Train running number
Transmitted to	RBC
Content	Variable	Length	Comment
	NID_PACKET	8
	L_PACKET	13
	NID_OPERATIONAL	32

7.4.3.4.2 Packet Number 9: Level 2 transition information

🔗

Description	Identity of the level 2 transition balise group
Transmitted to	RBC
Content	Variable	Length	Comment
	NID_PACKET	8
	L_PACKET	13
	NID_LTRBG	10 + 14

7.4.3.4.3 Packet Number 10: Safe consist length information for Supervised Manoeuvre

🔗

Description	Safe consist length information for Supervised Manoeuvre.
Transmitted to	RBC
Content	Variable	Lengt h	Comment
	NID_PACKET	8
	L_PACKET	13
	Q_SAFECONSISTLENGTH	1
	L_CONSISTFRONTENGINENOM	12	Only if = 1, and the following variables follow Q_SAFECONSISTLENGTH L_CONSISTFRONTENGINENOM
	L_CONSISTFRONTENGINEMIN	12
	L_CONSISTFRONTENGINEMAX	12
	L_CONSISTREARENGINENOM	12
	L_CONSISTREARENGINEMIN	12
	L_CONSISTREARENGINEMAX	12

7.4.3.5 Packet Number 11: Validated train data

🔗

Description	Validated train data.
Content	Variable	Length	Comment
	NID_PACKET	8
	L_PACKET	13
	NC_CDTRAIN	4
	NC_TRAIN	15
	L_TRAIN	12
	V_MAXTRAIN	7
	M_LOADINGGAUGE	8
	M_AXLELOADCAT	7
	M_AIRTIGHT	2
	N_AXLE	10
	N_ITER	5
	(k) M_VOLTAGE	4	Identity of the traction system (k) given only if (k) ≠ 0 NID_CTRACTION M_VOLTAGE
	(k) NID_CTRACTION	10
	N_ITER	5
	(k) NID_NTC	8	Type of National System available

7.4.3.5.1 Packet Number 12: Default train data for Supervised Manoeuvre

🔗

Description	Default train data for Supervised Manoeuvre.
Transmitted to	RBC
Content	Variable	Length	Comment
	NID_PACKET	8
	L_PACKET	13
	NC_CDTRAIN	4
	NC_TRAIN	15
	V_MAXTRAIN	7
	M_LOADINGGAUGE	8
	M_AXLELOADCAT	7
	M_AIRTIGHT	2
	N_AXLE	10
	N_ITER	5
	(k) M_VOLTAGE	4	Identity of the traction system (k) given only if (k) ≠ 0 NID_CTRACTION M_VOLTAGE
	(k) NID_CTRACTION	10

7.4.3.6 Packet Number 44: Data used by applications outside the ERTMS / ETCS system.

🔗

Description	Messages between on-board and trackside devices, which contain information used by applications outside the ERTMS/ETCS system.
Transmitted to	RBC , RIU
Content	Variable	Length	Comment
	NID_PACKET	8
	L_PACKET	13
	NID_XUSER	9
	Other data, depending on NID_XUSER

7.4.4 Intentionally deleted 🔗

7.5 Definitions of Variables 🔗

X.X.X Missing subsection 🔗

7.5.0.1 A_NVMAXREDADH1

🔗

Name	Maximum deceleration under reduced adhesion conditions (1)
Description	Maximum deceleration under reduced adhesion conditions applicable for trains: • With brake position “Passenger train in P”, and • with special/additional brakes independent from wheel/rail adhesion. This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
6 bits	0 m/s2	3 m/s2	0.05 m/s2
Special/Reserved Values	61	No maximum deceleration, display target information in CSM
	62	No maximum deceleration, display time to Indication in CSM
	63	No maximum deceleration, no additional display

7.5.0.2 A_NVMAXREDADH2

🔗

Name	Maximum deceleration under reduced adhesion conditions (2)
Description	Maximum deceleration under reduced adhesion conditions applicable for trains: • with brake position “Passenger train in P”, and • without special/additional brakes independent from wheel/rail adhesion. This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
6 bits	0 m/s2	3 m/s2	0.05 m/s2
Special/Reserved Values	61	No maximum deceleration, display target information in CSM
	62	No maximum deceleration, display time to Indication in CSM
	63	No maximum deceleration, no additional display

7.5.0.3 A_NVMAXREDADH3

🔗

Name	Maximum deceleration under reduced adhesion conditions (3)
Description	Maximum deceleration under reduced adhesion conditions applicable for trains: • with brake position “Freight train in P”, or • with brake position “Freight train in G”. This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
6 bits	0 m/s2	3 m/s2	0.05 m/s2
Special/Reserved Values	61	No maximum deceleration, display target information in CSM
	62	No maximum deceleration, display time to Indication in CSM
	63	No maximum deceleration, no additional display

7.5.0.4 A_NVP12

🔗

Name	Lower deceleration limit to determine the set of Kv to be used
Description	Lower deceleration limit to determine the set of correction factor Kv to be used for Conventional Passenger trains. This variable is part of the National Values.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
6 bits	0 m/s2	3.15 m/s2	0.05 m/s2

7.5.0.5 A_NVP23

🔗

Name	Upper deceleration limit to determine the set of Kv to be used
Description	Upper deceleration limit to determine the set of correction factor Kv to be used for Conventional Passenger trains. This variable is part of the National Values.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
6 bits	0 m/s2	3.15 m/s2	0.05 m/s2

7.5.1.1 D_ADHESION

🔗

Name	Distance to start of area with reduced adhesion factor
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1 m or 10 m depending on Q_SCALE

7.5.1.2 D_AXLELOAD

🔗

Name	Incremental distance to the start of the next Axle load speed profile
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 m	327.670 km	10 cm, 1m or 10 m depending on Q_SCALE

7.5.1.2.1 D_CURRENT

🔗

Name	Distance to change of allowed current consumption
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1 m or 10 m depending on Q_SCALE

7.5.1.3 D_CYCLOC

🔗

Name	Distance between two position reports from the train
Description	The train has to report its position every meters. D_CYCLOC
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.660 km	10 cm, 1m or 10 m depends on Q_SCALE
Special/Reserved Values	32767	The train has not to report cyclically its position.

7.5.1.4 D_DP

🔗

Name	Distance from the End of Movement Authority to danger point
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on . Q_SCALE

7.5.1.5 D_EMERGENCYSTOP

🔗

Name	Distance to emergency stop location
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on . Q_SCALE

7.5.1.6 D_ENDTIMERSTARTLOC

🔗

Name	Distance from the End section timer start location to the End of Movement Authority
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.7 D_GRADIENT

🔗

Name	Incremental distance to next change of gradient.
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on . Q_SCALE

7.5.1.8 D_INFILL

🔗

Name	Distance to location where to connect/disconnect to a radio infill unit
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.9 D_LEVELTR

🔗

Name	Distance to level transition
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.660 km	10 cm, 1m or 10 m depends on . Q_SCALE
Special/Reserved Values	32767	Now (The level transition is performed upon receipt of the order)

7.5.1.10 D_LINK

🔗

Name	Incremental linking distance to next linked balise group
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.11 D_LOC

🔗

Name	Incremental distance between locations where the train has to report its position.
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.12 D_LOOP

🔗

Name	Distance between EOLM and start of loop
Description	The EOLM specifies the distance to the beginning of the loop transmission
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.13 D_LRBG

🔗

Name	Distance between the last relevant balise group and the estimated front end of the train (the side of the active cab).
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.660 km	10 cm, 1m or 10 m depends on Q_SCALE
Special/Reserved Values	32767	Unknown or greater than 327.660 km

7.5.1.13.1 D_LX

🔗

Name	Distance to LX start location
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.14 D_MAMODE

🔗

Name	Incremental distance to the start of the next Mode Profile
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.15 D_NVOVTRP

🔗

Name	Maximum distance for overriding the train trip
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.16 D_NVPOTRP

🔗

Name	Maximum distance for reversing in Post Trip mode
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.17 D_NVROLL

🔗

Name	Roll away distance limit
Description	This variable is part of the National Values and is used for Roll Away Protection, Unauthorised Direction Movement Protection and Standstill Supervision. Within the (national/default) limits of the train may be moved for uncoupling. D_NVROLL
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.660 km	10 cm, 1m or 10 m depends on Q_SCALE
Special/Reserved Values	32767	

7.5.1.18 D_NVSTFF

🔗

Name	Maximum distance for running in Staff Responsible mode
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.660 km	10 cm, 1m or 10 m depends on Q_SCALE
Special/Reserved Values	32767	

7.5.1.19 D_OL

🔗

Name	The distance from the End of Movement Authority to the end of overlap
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on . Q_SCALE

7.5.1.19.1 D_PBD

🔗

Name	Permitted Braking Distance
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on . Q_SCALE

7.5.1.19.2 D_PBDSR

🔗

Name	Incremental distance to the start of the next speed restriction to ensure permitted braking distance
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on . Q_SCALE

7.5.1.20 D_POSOFF

🔗

Name	Offset from the location reference of the geographical position reference balise group to the related track kilometre reference.
Description	The geographical position reporting function uses this variables content as an offset from the location reference of the geographical position reference balise group to the related track kilometre reference.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 m	327.670 km	10 cm, 1m or 10 m depends on . Q_SCALE

7.5.1.21 D_RBCTR

🔗

Name	Distance to RBC transition
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on . Q_SCALE

7.5.1.22 D_REF

🔗

Name	Reference distance
Description	Distance between the LRBG and the new shifted location reference. The positive values are in the nominal direction of the LRBG
Length of variable	Minimum Value	Maximum Value	Resolution/formula
16 bits	-327.680 km	327.670 km	10 cm, 1m or 10 m depends on . Q_SCALE
Special/Reserved Values	The negative value are coded in 2’s complement

7.5.1.23 D_REVERSE

🔗

Name	Maximum distance to run in RV mode
Description	Distance from reference location to end location of the distance to run in RV mode
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.660 km	10 cm, 1m or 10 m depends on Q_SCALE
Special/Reserved Values	32767	

7.5.1.24 D_SECTIONTIMERSTOPLOC

🔗

Name	Distance from beginning of section to the Section Time-out stop location
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.25 D_SR

🔗

Name	Distance in SR mode
Description	Distance that can be run in SR mode
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.660 km	10 cm, 1m or 10 m depends on Q_SCALE
Special/Reserved Values	32767	

7.5.1.26 D_STARTOL

🔗

Name	Distance from the overlap timer start location to the End of Movement Authority
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.27 D_STARTREVERSE

🔗

Name	Distance to start of reversing permitted area
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.28 D_STATIC

🔗

Name	Incremental distance to next discontinuity in a international SSP profile
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.29 D_SUITABILITY

🔗

Name	Distance to change in route suitability
Description	The incremental distance to where the route suitability data changes.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 m	327.670 km	10 cm, 1m or 10 m depending on Q_SCALE

7.5.1.30 D_TAFDISPLAY

🔗

Name	Distance from where on a track ahead free request shall be displayed
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.31 D_TEXTDISPLAY

🔗

Name	Distance from where on a text shall be displayed
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.660 km	10 cm, 1m or 10 m depends on Q_SCALE
Special/Reserved Values	32767	No “location” sub-condition specified for the start condition of the display of the text

7.5.1.32 D_TRACKINIT

🔗

Name	Distance to start of empty profile
Description	Distance to where initial states of the related track description in the packet shall be resumed
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 m	327.670 km	10 cm, 1m or 10 m depending on Q_SCALE

7.5.1.33 D_TRACKCOND

🔗

Name	Track condition distance
Description	The incremental distance to where the track conditions change.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 m	327.670 km	10 cm, 1m or 10 m depending on Q_SCALE

7.5.1.34 D_TRACTION

🔗

Name	Distance to change of traction
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 m	327.670 km	10 cm, 1m or 10 m depending on Q_SCALE

7.5.1.35 D_TSR

🔗

Name	Distance to beginning of temporary speed restriction
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.36 D_VALIDNV

🔗

Name	Distance to start of validity of national values
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.660 km	10 cm, 1m or 10 m depends on Q_SCALE
Special/Reserved Values	32767	Now (National Values are immediately applicable)

7.5.1.37 G_A

🔗

Name	Gradient
Description	This is the absolute value of the engineered gradient between two defined locations.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0	254‰	1‰
Special/Reserved Values	255	Non numerical value telling that the current gradient description ends at (n) D_GRADIENT

7.5.1.37.1 G_PBDSR

🔗

Name	Default gradient for PBD Speed restriction
Description	Defines a default gradient to be used for calculation of speed restriction to ensure permitted braking distance
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0	255‰	1‰

7.5.1.38 G_TSR

🔗

Name	Default gradient for TSR supervision
Description	defines a default gradient to be used for TSR supervision when no gradient profile (packet 21) is available.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0	255‰	1‰

7.5.1.39 L_ACKLEVELTR

🔗

Name	Length of the acknowledgement area in rear of the required level
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.40 L_ACKMAMODE

🔗

Name	Length of the acknowledgement area in rear of the start of the required mode
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.41 L_ADHESION

🔗

Name	Length of reduced adhesion
Description	Length for which the reduced adhesion factor apply.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1 m or 10 m depending on Q_SCALE

7.5.1.42 L_AXLELOAD

🔗

Name	Length of speed restriction due to Axle load
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 m	327.670 km	10 cm, 1m or 10 m depending on Q_SCALE

7.5.1.42.1 L_CONSISTFRONTENGINEMAX

🔗

Name	Maximum consist length in front of the engine
Description	This is the maximum length of the consist in front of the engine, counted from the front end of the engine taking into account the active cab, and considering the coupling play and/or any other uncertainties in the consist length information.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
12 bits	0 m	4095 m	1 m

7.5.1.42.2 L_CONSISTFRONTENGINEMIN

🔗

Name	Minimum consist length in front of the engine
Description	This is the minimum length of the consist in front of the engine, counted from the front end of the engine taking into account the active cab, and considering the coupling play and/or any other uncertainties in the consist length information.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
12 bits	0 m	4095 m	1 m

7.5.1.42.3 L_CONSISTFRONTENGINENOM

🔗

Name	Nominal consist length in front of the engine
Description	This is the nominal length of the consist in front of the engine without any coupling play and/or any other uncertainties in the consist length information, counted from the front end of the engine taking into account the active cab.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
12 bits	0 m	4095 m	1 m

7.5.1.42.4 L_CONSISTREARENGINEMAX

🔗

Name	Maximum consist length in rear of the engine
Description	This is the maximum length of the consist in rear of the engine, counted from the front end of the engine taking into account the active cab, and considering the coupling play and/or any other uncertainties in the consist length information.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
12 bits	0 m	4095 m	1 m

7.5.1.42.5 L_CONSISTREARENGINEMIN

🔗

Name	Minimum consist length in rear of the engine
Description	This is the minimum length of the consist in rear of the engine, counted from the front end of the engine taking into account the active cab, and considering the coupling play and/or any other uncertainties in the consist length information.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
12 bits	0 m	4095 m	1 m

7.5.1.42.6 L_CONSISTREARENGINENOM

🔗

Name	Nominal consist length in rear of the engine
Description	This is the nominal length of the consist in rear of the engine without any coupling play and/or any other uncertainties in the consist length information, counted from the front end of the engine taking into account the active cab.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
12 bits	0 m	4095 m	1 m

7.5.1.43 L_DOUBTOVER

🔗

Name	L_DOUBTOVER
Description	is the over-reading amount plus the of the LRBG L_DOUBTOVER Q_LOCACC
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.660 km	10 cm, 1m or 10 m depends on Q_SCALE
Special/Reserved Values	32767	Unknown or greater than 327.660 km

7.5.1.44 L_DOUBTUNDER

🔗

Name	L_DOUBTUNDER

7.5.1.45 L_ENDSECTION

🔗

Name	Length of the End section in the MA
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on . Q_SCALE

7.5.1.46 L_LOOP

🔗

Name	Length of loop
Description	specifies the length of the loop starting from the distance indicated by L_LOOP D_LOOP
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.46.1 L_LX

🔗

Name	Length of the LX area
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.47 L_MAMODE

🔗

Name	Length of the area of the required mode
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.660 km	10 cm, 1m or 10 m depending on Q_SCALE
Special/Reserved Values	32767	

7.5.1.48 L_MESSAGE

🔗

Name	Message length
Description	indicates the length of the message in bytes, including all packets and all variables defined in the message header ( and also). L_MESSAGE NID_MESSAGE L_MESSAGE
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 bits	0	1023	1 Byte

7.5.1.48.1 L_NVKRINT

🔗

Name	Train length step used to define the integrated correction factor Kr
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
5 bits
Special/Reserved Values	0	0m
	1	25m
	2	50m
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.660 km	10 cm, 1m or 10 m depends on Q_SCALE
Special/Reserved Values	32767	Unknown or greater than 327.660 km

7.5.1.49 L_PACKET

🔗

Name	Packet length
Description	indicates the length of the packet in bits, including all bits of the packet header L_PACKET
Length of variable	Minimum Value	Maximum Value	Resolution/formula
13 bits	0	8191	1 bit

7.5.1.49.1 L_PBDSR

🔗

Name	Length of speed restriction to ensure permitted braking distance
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on . Q_SCALE

7.5.1.50 L_REVERSEAREA

🔗

Name	Length of the reversing permitted area
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.51 L_SECTION

🔗

Name	Length of section in the MA
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.51.1 L_STOPLX

🔗

Name	Length of the stopping area in rear of the start location of the LX area
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.52 L_TAFDISPLAY

🔗

Name	Length on which a track ahead free request shall be displayed
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE
	3	75m
	4	100m
	5	150m
	6	200m
	7	300m
	....	.... (steps of 100m)
	31	2700m

7.5.1.53 L_TEXT

🔗

Name	Length of text string
Description	defines the length of a text string ( * ) L_TEXT L_TEXT X_TEXT
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0	255	1 Text String Element

7.5.1.54 L_TEXTDISPLAY

🔗

Name	Length on which a text shall be displayed
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.660 km	10 cm, 1m or 10 m depends on Q_SCALE
Special/Reserved Values	32767	No “location” sub-condition specified for the end condition of the display of the text

7.5.1.55 L_TRACKCOND

🔗

Name	Length for which the defined track condition is valid
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 m	327.670 km	10 cm, 1m or 10 m depending on Q_SCALE

7.5.1.56 L_TRAIN

🔗

Name	Train length
Description	This is the length of the train acquired as Train Data. When the safe consist length is captured as part of valid Train Data, is equal to , considering that valid Train Data can only be captured and sent to the RBC with the leading engine/cab located at the very front of the train. L_TRAIN L_CONSISTREARENGINEMAX
Length of variable	Minimum Value	Maximum Value	Resolution/formula
12 bits	0 m	4095 m	1 m

7.5.1.57 L_TRAININT

🔗

Name	Confirmed Train length
Description	Information sent to the RBC allowing the trackside to retrieve what was the position of the min safe rear end of the train at the time the train was last known to be integer. It is counted from the estimated position of the train front reported to the RBC .
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 m	32767 m	1 m

7.5.1.58 L_TSR

🔗

Name	Length of the temporary speed restriction
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits	0 cm	327.670 km	10 cm, 1m or 10 m depends on Q_SCALE

7.5.1.59 M_ACK

🔗

Name	Qualifier for acknowledgement request
Description	Indicates whether the message must be acknowledged or not
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No acknowledgement required
	1	Acknowledgement required

7.5.1.60 M_ADHESION

🔗

Name	Adhesion factor
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Slippery rail
	1	Non slippery rail

7.5.1.61 M_AIRTIGHT

🔗

Name	airtight system presence
Description	indicates whether the train is fitted with an airtight system or not.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	00	Not fitted
	01	Fitted
	10	Spare
	11	Spare

7.5.1.62 M_AXLELOADCAT

🔗

Name	Axle load category
Description	The values allocated below correspond to the axle load categories and it is used by the on-board equipment to compare its axle load category with the axle load category sent by trackside. For the underlying meaning of the axle load categories listed below (with the exception of HS17 ) refer to INF TSI . The category HS17 (axle load <= 17t) corresponds to a static load per axle only, as specified in the former HS RST TSI clause 4.2.3.2. The introduction of this artefact is necessary to ensure backward compatibility, without any negative performance impact, in case ASPs are used on lines operated with system version X = 1.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits
	0	A
	1	HS17
	2	B1
	3	B2
	4	C2
	5	C3
	6	C4
	7	D2
	8	D3
	9	D4
	10	D4XL
	11	E4
12	E5
13-127	Spare

7.5.1.62.1 M_CURRENT

🔗

Name	Allowed current consumption
Description	It defines the allowed current consumption to be used by the train
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 bits	0 A	10000 A	10 A
Special/Reserved Values	1001 - 1022	Spare
	1023	No restriction for current consumption

7.5.1.63 M_DUP

🔗

Name	Duplicate balise
Description	Flags to tell whether the balise is a duplicate of one of the adjacent balises.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	00	No duplicates
	01	This balise is a duplicate of the next balise (seen in the nominal direction of the balise group).
	10	This balise is a duplicate of the previous balise (seen in the nominal direction of the balise group).
	11	Spare

7.5.1.64 M_ERROR

🔗

Name	Identifier of the type of error
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits
Special/Reserved Values	0	Balise group: linking consistency error (ref. 3.16.2.3)
	1	Linked balise group: message consistency error(ref. 3.16.2.4.1/4)
	2	Unlinked balise group: message consistency error (ref. 3.16.2.5)
	3	Radio: message consistency error (ref. 3.16.3.1.1 except 3.16.3.1.1b)
	4	Radio: sequence error (ref. 3.16.3.1.1b)
	5	Radio: safe radio connection error (ref. 3.16.3.4, to be sent when communication links re-established)
	6	Safety critical fault (ref 4.4.6.1.6 , 4.4.15.1.5)
	7	Double linking error (3.16.2.7.1)
	8	Double repositioning error (3.16.2.7.2)
	9	Odometer accuracy monitoring: impairment threshold reached (ref. 3.6.8.5)
	10	Odometer accuracy monitoring: safety threshold reached (ref. 3.6.8.7)
	11-255	Spare

7.5.1.65 M_LEVEL

🔗

Name	Current Operating Level
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
3 bits
Special/Reserved Values	0	Level 0
	1	Level NTC specified by NID_NTC
	2	Level 1
	3	Level 2
	4-7	Spare

7.5.1.66 M_LEVELTEXTDISPLAY

🔗

Name	Onboard operating level for text display
Description	The display of the text starts if the on-board is in the defined level/ends if the on-board executes a transition from the defined level
Length of variable	Minimum Value	Maximum Value	Resolution/formula
3 bits
Special/Reserved Values	0	Level 0
	1	Level NTC specified by NID_NTC
	2	Level 1
	3	Level 2
	4	No “level” sub-condition specified for the start/end condition of the display of the text
	5-7	Spare

7.5.1.67 M_LEVELTR

🔗

Name	Required level
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
3 bits
Special/Reserved Values	0	Level 0
	1	Level NTC specified by NID_NTC
	2	Level 1
	3	Level 2
	4-7	Spare

7.5.1.67.1 M_LINEGAUGE

🔗

Name	Line gauge
Description	Defining which loading gauge(s) are permitted on a line (refer to TSI INF )
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits			Bitset
	xxxx xxx1	G1
	xxxx xx1x	GA
	xxxx x1xx	GB
	xxxx 1xxx	GC
	00000000	Spare
	xxx1 xxxx	Spare
	xx1x xxxx	Spare
x1xx xxxx	Spare
1xxx xxxx	Spare

7.5.1.67.2 M_LINEAXLELOADCAT

🔗

Name	Line axle load categories
Description	Defining which axle load categories are permitted on a line (refer to TSI INF ) in order to perform the Route suitability function
Length of variable	Minimum Value	Maximum Value	Resolution/formula
16 bits			Bitset
Special/Reserved Values	xxxx xxxx xxxx xxx1	A
	xxxx xxxx xxxx xx1x	HS17
	xxxx xxxx xxxx x1xx	B1
	xxxx xxxx xxxx 1xxx	B2
	xxxx xxxx xxx1 xxxx	C2
	xxxx xxxx xx1x xxxx	C3
	xxxx xxxx x1xx xxxx	C4
	xxxx xxxx 1xxx xxxx	D2
	xxxx xxx1 xxxx xxxx	D3
	xxxx xx1x xxxx xxxx	D4
	xxxx x1xx xxxx xxxx	D4XL
	xxxx 1xxx xxxx xxxx	E4
	xxx1 xxxx xxxx xxxx	E5
	0000 0000 0000 0000	Spare
	xx1x xxxx xxxx xxxx	Spare
	x1xx xxxx xxxx xxxx	Spare
	1xxx xxxx xxxx xxxx	Spare

7.5.1.68 M_LOADINGGAUGE

🔗

Name	Loading gauge
Description	Defining the loading gauge profile of a train (refer to LOC & PAS TSI )
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits
Special/Reserved Values	0	The train does not fit to any of the interoperable loading gauge profiles
	1	G1
	2	GA
	3	GB
	4	GC
	5-255	Spare

7.5.1.69 M_LOC

🔗

Name	Special location/moment where the train has to report its position
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
3 bits
Special/Reserved Values	000	Now (The position report is sent upon receipt of the order)
	001	Every LRBG compliant balise group.
	010	Do not send position report on passage of LRBG compliant balise group.

	011 - 111	Spare

7.5.1.70 M_MAMODE

🔗

Name	Required mode for a part of the MA
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	00	On Sight
	01	Shunting
	10	Limited Supervision
	11	Spare

7.5.1.71 M_MCOUNT

🔗

Name	Message counter
Description	The purpose of this counter is to make it possible for the ERTMS / ETCS on-board to detect which balise group message the telegram belongs to.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0	253	Numbers
Special/Reserved Values	254	The telegram never fits any message of the group
	255	The telegram fits with all telegrams of the same balise group

7.5.1.72 M_MODE

🔗

Name	Onboard operating mode
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
5 bits
	0	Full Supervision
	1	On Sight
	2	Staff Responsible
	3	Shunting
	4	Unfitted
	5	Sleeping
	6	Stand By
	7	Trip
	8	Post Trip
	9	System Failure
	10	Isolation
	11	Non Leading
	12	Limited Supervision
	13	National System
14	Reversing
15	Passive Shunting
16	Automatic Driving
17	Supervised Manoeuvre
18-31	Spare

7.5.1.73 M_MODETEXTDISPLAY

🔗

Name	Onboard operating mode for text display
Description	The display of the text starts if the on-board is in the defined mode/ends if the on-board executes a transition from the defined mode
Length of variable	Minimum Value	Maximum Value	Resolution/formula
4 bits
Special/Reserved Values	0	Full Supervision
	1	On Sight
	2	Staff Responsible
	3	Automatic Driving
	4	Unfitted
	5	Supervised Manoeuvre
	6	Stand By
	7	Trip
	8	Post Trip
	9	Spare
	10	Spare
	11	Spare
	12	Limited Supervision
	13	Spare
	14	Reversing
	15	No “mode” sub-condition specified for the start/end condition of the display of the text

7.5.1.73.1 M_NVAVADH

🔗

Name	Weighting factor for available wheel/rail adhesion
Description	This variable is part of the National Values.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
5 bits	0	1.00	0.05
Special/Reserved Values	1.05 – 1.55	Spare

7.5.1.74 M_NVCONTACT

🔗

Name	T_NVCONTACT reaction
Description	Indicates the reaction to be performed when timer elapses This variable is part of the National Values T_NVCONTACT
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
	00	Train trip
	01	Apply service brake
10	No Reaction
11	Spare

7.5.1.75 M_NVDERUN

🔗

Name	Entry of Driver ID permitted while running
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No
	1	Yes

7.5.1.75.1 M_NVEBCL

🔗

Name	Confidence level for emergency brake safe deceleration on dry rails
Description	This variable is part of the National Values. Based on the required confidence level, the on-board equipment selects its corresponding rolling stock correction factor Kdry_rst(V). The confidence level on emergency brake safe deceleration represents the probability of the following individual event: the rolling stock emergency brake subsystem of the train does ensure a deceleration at least equal to A_brake_emergency(V) * Kdry_rst(V), when the emergency brake is commanded on dry rails.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
4 bits
Special/Reserved Values	0	Confidence level = 50 %
	1	Confidence level = 90 %
	2	Confidence level = 99 %
	3	Confidence level = 99.9 %
	4	Confidence level = 99.99%
	5	Confidence level = 99.999 %
	6	Confidence level = 99.9999 %
	7	Confidence level = 99.99999 %
	8	Confidence level = 99.999999 %
	9	Confidence level = 99.9999999 %
	10-15	Spare

7.5.1.75.2 M_NVKRINT

🔗

Name	Integrated correction factor Kr
Description	This is the train length dependent integrated correction factor. (l) is valid for a train length between (l) and (l+1). is valid between 0m and (1) This variable is part of the National Values M_NVKRINT L_NVKRINT L_NVKRINT M_NVKRINT L_NVKRINT
Length of variable	Minimum Value	Maximum Value	Resolution/formula
5 bits	0	1.55	0.05

7.5.1.75.3 M_NVKTINT

🔗

Name	Integrated correction factor Kt
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
5 bits	0	1.55	0.05

7.5.1.75.4 M_NVKVINT

🔗

Name	Integrated correction factor Kv
Description	This is the speed dependent integrated correction factor. (n) is valid for an estimated speed between (n) and (n+1). is valid between 0 km/h and (1) This variable is part of the National Values M_NVKVINT V_NVKVINT V_NVKVINT M_NVKVINT V_NVKVINT
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0	2.54	0.02

7.5.1.75.5 M_PLATFORM

🔗

Name	Type of platform
Description	Nominal height of platform above rail level (refer to TSI infrastructure)
Length of variable	Minimum Value	Maximum Value	Resolution/formula
4 bits
Special/Reserved Values	0000	200 mm
	0001	300-380 mm
	0010	550 mm
	0011	580 mm
	0100	680 mm
	0101	685 mm
	0110	730 mm
	0111	760 mm
	1000	840 mm
	1001	900 mm
	1010	915 mm
	1011	920 mm
	1100	960 mm
	1101	1100 mm
	1110 – 1111	Spare

7.5.1.76 M_POSITION

🔗

Name	Track kilometre reference value
Description	The geographical position reporting function uses this variables content as a reference value.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
24 bits	0 m	9’999’999 m	1 m
Special/Reserved Values	10’000’000-16’777’214	Spare
	16’777’215	No more geographical position calculation after this reference location

7.5.1.77 M_TRACKCOND

🔗

Name	Type of track condition
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
4 bits
Special/Reserved Values	0000	Non stopping area. Initial state: stopping permitted
	0001	Tunnel stopping area. Initial state: no tunnel stopping area
	0010	Sound horn. Initial state: no request for sound horn
	0011	Powerless section – lower pantograph. Initial state: not powerless section
	0100	Radio hole (stop supervising ). Initial state: supervise T_NVCONTACT T_NVCONTACT
	0101	Air tightness. Initial state: no request for air tightness
	0110	Switch off regenerative brake. Initial state: regenerative brake on
	0111	Switch off eddy current brake for service brake. Initial state: eddy current brake for service brake on
	1000	Switch off magnetic shoe brake. Initial state: magnetic shoe brake on
	1001	Powerless section – switch off the main power switch. Initial state: not powerless section
	1010	Switch off eddy current brake for emergency brake. Initial state: eddy current brake for emergency brake on
	1011 –1111	Spare

7.5.1.78 M_VOLTAGE

🔗

Name	Traction System voltage
Description	It indicates the voltage of the traction system installed on a specific line or respectively that can be used by an engine The identity of the traction system is given by and, if ≠ 0, by the country identifier of the traction system ( ) M_VOLTAGE M_VOLTAGE NID_CTRACTION
Length of variable	Minimum Value	Maximum Value	Resolution/formula
4 bits
Special/Reserved Values	0	Line not fitted with any traction system
	1	AC 25 kV 50 Hz
	2	AC 15 kV 16.7 Hz
	3	DC 3 kV
	4	DC 1.5 kV
	5	DC 600/750 V
	6-15	Spare

7.5.1.79 M_VERSION

🔗

Name	Version of ETCS system
Description	This gives the version of the ETCS system Each part indicates the first and second number of the version respectively. - The first number distinguishes not compatible versions. (The three MSB ’s) - The second number indicates compatibility within a version X. (The four LSB ’s)
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits
	000 XXXX	Previous versions according to e.g. EEIG SRS , UIC A200 SRS
	001 0000	Version 1.0, introduced in SRS 1.2.0
	001 0001	Version 1.1, introduced in SRS 3.3.0
001 0010	Not valid
….
001 1111	Not valid
010 0000	Version 2.0, introduced in SRS 3.3.0
010 0001	Version 2.1, introduced in SRS 3.6.0
010 0010	Version 2.2, introduced in SRS 4.0.0
010 0011	Version 2.3, introduced in SRS 4.0.0
010 0100	Not valid
…	…
010 1111	Not valid
011 0000	Version 3.0, introduced in SRS 4.0.0
011 0001	Reserved for future use (this is a valid value)
…	…
111 1111	Reserved for future use (this is a valid value)

7.5.1.79.1 N_AXLE

🔗

Name	Axle number of the engine
Description	This gives the number of axles of the single unit (fixed train set or locomotive) in which the onboard equipment is fitted
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 bits	0	1022	integers
Special/Reserved Values	1023	Unknown

7.5.1.80 N_ITER

🔗

Name	Number of iterations of a data set following this variable in a packet
Description	If is 0 then no data set is following. Two or more nested levels of iterations can exist. N_ITER
Length of variable	Minimum Value	Maximum Value	Resolution/formula
5 bits	0	31	integers

7.5.1.81 N_PIG

🔗

Name	Position in Group
Description	Defines the relative position in a balise group
Length of variable	Minimum Value	Maximum Value	Resolution/formula
3 bits
Special/Reserved Values	0	I am the 1st
	…	…
	7	I am the 8th

7.5.1.82 N_TOTAL

🔗

Name	Total number of balise(s) in the group
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
3 bits
	0	1 balise in the group
	…
7	8 balises in the group

7.5.1.82.1 NC_CDDIFF

🔗

Name	Cant Deficiency SSP category
Description	It is the “Cant Deficiency” SSP category for which a different value for the static line speed exists. Used together with to permit certain trains to go faster or lower than the “international basic static speed” given by . V_DIFF V_STATIC
Length of variable	Minimum Value	Maximum Value	Resolution/formula
4 bits	0	15
Special/Reserved Values	0	Specific SSP applicable to Cant Deficiency 80 mm
	1	Specific SSP applicable to Cant Deficiency 100 mm
	2	Specific SSP applicable to Cant Deficiency 130 mm
	3	Specific SSP applicable to Cant Deficiency 150 mm
	4	Specific SSP applicable to Cant Deficiency 165 mm
	5	Specific SSP applicable to Cant Deficiency 180 mm
	6	Specific SSP applicable to Cant Deficiency 210 mm
	7	Specific SSP applicable to Cant Deficiency 225 mm
	8	Specific SSP applicable to Cant Deficiency 245 mm
	9	Specific SSP applicable to Cant Deficiency 275 mm
	10	Specific SSP applicable to Cant Deficiency 300 mm
	11 - 15	Spare

7.5.1.82.2 NC_CDTRAIN

🔗

Name	Cant Deficiency Train Category
Description	Cant Deficiency Train category to which the train belongs. Thanks to , the train knows the “Cant Deficiency” SSP it must obey. By receiving a list of static speed profile, thanks to , the train can select the “Cant Deficiency” SSP best suiting its . A train belongs to one and only one category of Cant Deficiency. NC_CDTRAIN NC_CDDIFF NC_CDTRAIN
Length of variable	Minimum Value	Maximum Value	Resolution/formula
4 bits	0	15
Special/Reserved Values	0	Cant Deficiency 80 mm
	1	Cant Deficiency 100 mm
	2	Cant Deficiency 130 mm
	3	Cant Deficiency 150 mm
	4	Cant Deficiency 165 mm
	5	Cant Deficiency 180 mm
	6	Cant Deficiency 210 mm
	7	Cant Deficiency 225 mm
	8	Cant Deficiency 245 mm
	9	Cant Deficiency 275 mm
	10	Cant Deficiency 300 mm
	11 - 15	Spare

7.5.1.83 NC_DIFF

🔗

Name	Other specific SSP category
Description	It is the “other specific” SSP category for which a different value for the static line speed exists. Used together with to permit trains belonging to the corresponding “other international” train category to go faster or lower than the “international basic static speed” given by . Value 0 of corresponds to the LSB of , value 14 of to MSB (15-bit variable) of . V_DIFF V_STATIC NC_DIFF NC_TRAIN NC_DIFF NC_TRAIN
Length of variable	Minimum Value	Maximum Value	Resolution/formula
4 bits	0	15	Numbers
Special/Reserved Values	0	Specific SSP applicable to Freight train braked in “P” position
	1	Specific SSP applicable to Freight train braked in “G” position
	2	Specific SSP applicable to Passenger train
	3-15	Spare

7.5.1.84 NC_TRAIN

🔗

Name	Other International Train Category.
Description	Other train category (different from Cant Deficiency) to which the train belongs. Thanks to , the train knows the “Other specific” SSP category it must consider. By receiving a list of static speed profile, thanks to , the train can select the SSP it must obey. Each bit represents one category. A train can belong to various categories. NC_TRAIN NC_DIFF
Length of variable	Minimum Value	Maximum Value	Resolution/formula
15 bits			Bitset
Special/Reserved Values	000 0000 0000 0000	Train does not belong to any of the “Other International” Train Category
	xxx xxxx xxxx xxx1	Freight train braked in “P” position
	xxx xxxx xxxx xx1x	Freight train braked in “G” position
	xxx xxxx xxxx x1xx	Passenger train
	xxx xxxx xxx 1xxx	Spare
	xxx xxxx xxx1 xxxx	Spare
	xxx xxxx xx1x xxxx	Spare
	xxx xxxx x1xx xxxx	Spare
	xxx xxxx 1xxx xxxx	Spare
	xxx xxx1 xxxx xxxx	Spare
	xxx xx1x xxxx xxxx	Spare
	xxx x1xx xxxx xxxx	Spare
	xxx 1xxx xxxx xxxx	Spare
	xx1 xxxx xxxx xxxx	Spare
	x1x xxxx xxxx xxxx	Spare
	1xx xxxx xxxx xxxx	Spare

7.5.1.85 (Values to be assigned according to 7.3.1.3) NID_BG

🔗

Name	Identity number of the balise group
Description	Identity number of a balise group or loop within the country or region defined by . NID_C
Length of variable	Minimum Value	Maximum Value	Resolution/formula
14 bits	0	16382	Numbers
Special/Reserved Values	16383	Identity is unknown (only to be used for Linking information)

7.5.1.86 (Values to be assigned according to 7.3.1.3) NID_C

🔗

Name	Identity number of the country or region
Description	Code used to identify the country or region in which the balise group, the RBC or the RIU is situated. These need not necessarily follow administrative or political boundaries.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 bits	0	1023	Numbers

7.5.1.86.1 (Values to be assigned according to 7.3.1.3) NID_CTRACTION

🔗

Name	Country identifier of the traction system
Description	It identifies the information, additional to , required to fully define the traction system. M_VOLTAGE
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 bits	0	1023	Numbers

7.5.1.87 NID_EM

🔗

Name	Emergency message identity
Description	Identifies the number of the emergency message
Length of variable	Minimum Value	Maximum Value	Resolution/formula
4 bits

7.5.1.88 (Values to be assigned according to 7.3.1.3) NID_ENGINE

🔗

Name	Onboard ETCS identity
Description	The ETCS identity number is uniquely defined for ERTMS / ETCS purposes
Length of variable	Minimum Value	Maximum Value	Resolution/formula
24 bits

7.5.1.89 (Values to be assigned according to 7.3.1.3) NID_LOOP

🔗

Name	Identity number of the loop
Description	Identity number of a loop within the country or region defined by given in the EOLM balise header. NID_C
Length of variable	Minimum Value	Maximum Value	Resolution/formula
14 bits	0	16383	Numbers

7.5.1.90 NID_LRBG

🔗

Name	Identity of last relevant balise group
Description	Country/region identity ( ) + balise identity number of last relevant balise group ( ). NID_C NID_BG
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 + 14 bits
Special/Reserved Values	16777215	Unknown

7.5.1.90.1 NID_LTRBG

🔗

Name	Identity of the level 2 transition balise group
Description	Identity of the balise group at the level 2 transition location towards which the train is running. Country/region identity ( ) + balise identity number of the level 2 transition location balise group ( ). NID_C NID_BG
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 + 14 bits

7.5.1.90.2 NID_LX

🔗

Name	Identity number of the Level Crossing.
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0	255	Number
Special/Reserved Values	0-126	Reserved for non RBC transmission (balise, loop or radio infill)
	127-255	Reserved for RBC transmission

7.5.1.91 NID_MESSAGE

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Name	Message identifier
Description	Message identifier. Regards defined values of , refer to chapters 8.5.2 and 8.5.3 NID_MESSAGE
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0	255	Numbers

7.5.1.91.1 (Values to be assigned according to 7.3.1.3) NID_MN

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Name	Identity of GSM-R Radio Network
Description	The identifies the GSM -R network the GSM -R Mobile Terminal has to register with. The consists of up to 6 digits which are entered left adjusted into the data field, the leftmost digit is the digit to be dialled first. In case the is shorter than 6 digits, the remaining space is to be filled with special character “F”. For further information about refer to Subset-54. NID_MN NID_MN NID_MN NID_MN
Length of variable	Minimum Value	Maximum Value	Resolution/formula
24 bits	0	999999	Binary Coded Decimal
Special/Reserved Values	For each digit ;
	Values A – E	Not Used
	F	Use value F for digit to indicate no digit (if number shorter than 6 digits)

7.5.1.92 NID_OPERATIONAL

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Name	Train Running Number
Description	This is the operational train running number. The consists of up to 8 digits which are entered left adjusted into the data field, the leftmost digit is the digit to be entered first. In case the is shorter than 8 digits, the remaining space is to be filled with special character “F”. NID_OPERATIONAL NID_OPERATIONAL
Length of variable	Minimum Value	Maximum Value	Resolution/formula
32 bits	0	9999 9999	Binary Coded Decimal
Special/Reserved Values	For each digit ;
	Values A – E	Spare
	F	Use value F for digit to indicate no digit (if number shorter than 8 digits)
	FFFF FFFF	Spare

7.5.1.93 NID_PACKET

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Name	Packet identifier
Description	This is used in the header for each packet, allowing the receiving equipment to identify the data which follows. Regards defined values of ,.refer to “packet numbers” in the tables in chapter 7.4.1. NID_PACKET
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0	255	Numbers

7.5.1.94 NID_PRVLRBG

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Name	Identity of previous LRBG
Description	Previous LRBG detected when running towards the balise group identified as LRBG with no change of direction in-between. Country/region identity ( ) + balise identity number of the previous LRBG ( ). NID_C NID_BG
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 + 14 bits
Special/Reserved Values	16777215	unknown

7.5.1.95 (Values to be assigned according to 7.3.1.3) NID_RADIO

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Name	Radio subscriber number.
Description	Quoted as a 16 digit decimal number. The number is to be entered “left adjusted” starting with the first digit to be dialled. Padding by the special value F shall be added after the least significant digit of the number. For further information about refer to SUBSET -054. NID_RADIO
Length of variable	Minimum Value	Maximum Value	Resolution/formula
64 bits	0	9999 9999 9999 9999	Binary Coded Decimal
Special/Reserved Values	For each digit ;
	Values A – E	Not Used
	F	Use value F for digit to indicate no digit (if number shorter than 16 digits)
	FFFF FFFF FFFF FFFF	Use the short number stored onboard

7.5.1.96 (Values to be assigned according to 7.3.1.3) NID_RBC

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Name	RBC ETCS identity number
Description	This variable provides the identity of the RBC belonging to . The RBC ETCS identity is given by + . NID_C NID_C NID_RBC
Length of variable	Minimum Value	Maximum Value	Resolution/formula
14 bits	0	16 382	Number
Special/Reserved Values	16 383	Contact last known RBC

7.5.1.97 (Values to be assigned according to 7.3.1.3) NID_RIU

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Name	Identity of radio infill unit
Description	This variable provides the identity of the RIU belonging to . The RIU ETCS identity is given by + . NID_C NID_C NID_RIU
Length of variable	Minimum Value	Maximum Value	Resolution/formula
14 bits	0	16 383	Number

7.5.1.98 (Values to be assigned according to 7.3.1.3) NID_NTC

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Name	National System identity
Description	Each value of this variable represents the identity of a National System.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0	255

7.5.1.98.1 NID_TEXTMESSAGE

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Name	Text message identifier
Description	Identity of a text message from trackside to be used in a report of driver acknowledgement to the RBC
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0	255	Number

7.5.1.99 NID_TSR

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Name	Identity number of Temporary Speed Restriction.
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0	255	Number
Special/Reserved Values	0-126	Reserved for non RBC transmission (balise, loop or radio infill)
	127-254	Reserved for RBC transmission
	255	Non-revocable speed restriction (applicable for all transmission media)

7.5.1.99.1 NID_VBCMK

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Name	Marker for Virtual Balise Cover
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
6 bits	0	63	Number

7.5.1.100 (Values to be assigned according to 7.3.1.3) NID_XUSER

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Name	Identity of user system
Description	Identity of user system for which remainder of packet is intended.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
9 bits	0	511	Numbers

7.5.1.101 Q_ASPECT

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Name	Aspect of “danger for shunting” signal
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Stop if in SH mode
	1	Go if in SH mode

7.5.1.101.1 Q_CONFTEXTDISPLAY

🔗

Name	Qualifier for text confirmation versus end of text display
Description	Gives the relationship between the driver acknowledgement and the end condition for text display
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Driver acknowledgement always ends the text display, regardless of the end condition
	1	Driver acknowledgement is an additional condition to end the display

7.5.1.102 Q_DANGERPOINT

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Name	Qualifier for danger point description.
Description	This variable is set to 1 if either a danger point exists or a release speed has to be specified
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No danger point information
	1	Danger point information to follow

7.5.1.102.1 Q_DIFF

🔗

Name	Qualifier for specific SSP categories.
Description	Indicates the type of specific SSP category In case of “other specific” SSP , it tells ERTMS / ETCS on-board equipment whether it replaces or not the Cant Deficiency SSP as selected by on-board (ref. 3.11.3.2.3), when the train belongs to an “other international” train category to which the “other specific” SSP applies
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	0	Cant Deficiency specific category
	1	Other specific category, replaces the Cant Deficiency SSP
	2	Other specific category, does not replace the Cant Deficiency SSP
	3	Spare

7.5.1.102.2 Q_DESK

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Name	Qualifier for desk closure.
Description	Indicates whether the desks of the engine are closed or not
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Desks are closed
	1	A desk is open

7.5.1.103 Q_DIR

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Name	Validity direction of transmitted data
Description	Qualifier to indicate the relevant validity direction of transmitted data, with reference to directionality of the balise group sending the information or to directionality of the LRBG , in case of information sent via radio.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	00	Reverse
	01	Nominal
	10	Both directions
	11	Spare

7.5.1.104 Q_DIRLRBG

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Name	Orientation of the train in relation to the direction of the LRBG
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
	0	Reverse
	1	Nominal
	2	Unknown
3	Spare

7.5.1.105 Q_DIRTRAIN

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Name	Direction of train movement in relation to the LRBG orientation
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	0	Reverse
	1	Nominal
	2	Unknown
	3	Spare

7.5.1.106 Q_DLRBG

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Name	Qualifier telling on which side of the LRBG the estimated front end is
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	0	Reverse
	1	Nominal
	2	Unknown
	3	Spare

7.5.1.107 Q_EMERGENCYSTOP

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Name	Qualifier for emergency stop acknowledgement
Description	Qualifier to inform the RBC about the use of a conditional emergency stop by the on-board equipment. For an unconditional emergency stop, it is set to “not relevant”
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bit
Special/Reserved Values	0	Conditional Emergency Stop accepted, with update of current EOA / LOA (ref 3.10.2.2 b) 1st and 4th bullets)
	1	Conditional Emergency Stop accepted, with no update of current EOA / LOA (ref 3.10.2.2 b) 2nd and 3rd bullets)
	2	Not Relevant (Unconditional Emergency Stop) (ref 3.10.2.3)
	3	Conditional Emergency Stop rejected because train has passed the emergency stop location (ref 3.10.2.2 a))

3.10.2.2 b) 1st and 4th bullets) 1 Conditional Emergency Stop accepted, with no update of current EOA / LOA (ref

🔗

3.10.2.2 b) 2nd and 3rd bullets) 2 Not Relevant (Unconditional Emergency Stop) (ref 3.10.2.3) 3 Conditional Emergency Stop rejected because train has passed the emergency stop location (ref 3.10.2.2 a))

🔗

7.5.1.108 Q_ENDTIMER

🔗

Name	Qualifier to indicate whether end section timer information exists for the End section in the MA
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No End section timer information
	1	End section timer information to follow

7.5.1.109 Q_FRONT

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Name	Qualifier for validity end point of profile element
Description	Qualifier to indicate if a speed limit given for a profile element is to be applied until the front of the train (no train length delay) or the end of the train (train length delay) has left the element
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Train length delay on validity end point of profile element.
	1	No train length delay on validity end point of profile element

7.5.1.110 Q_GDIR

🔗

Name	Qualifier for gradient slope.
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	downhill
	1	uphill

7.5.1.111 Q_INFILL

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Name	Qualifier to indicate whether a train is entering or exiting the radio infill area.
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Enter
	1	Exit

7.5.1.112 Q_INTEGRITY

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Name	Qualifier for train integrity status
Description	Qualifier, identifying the train integrity information. The related confirmed train length information is given by L_TRAININT
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	0	No train integrity information
	1	Train integrity confirmed by external source
	2	Train integrity confirmed by driver
	3	Train integrity lost

7.5.1.112.1 Q_SAFECONSISTLENGTH

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Name	Qualifier to indicate if the safe consist length information is available
Description	This variable indicates if the safe consist length information is available.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No safe consist length information available
	1	Safe consist length information available

7.5.1.113 Q_LGTLOC

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Name	Qualifier for the specified report location
Description	This qualifier tells whether the train has to report its position when the max safe front end or when the min safe rear end has over passed the location defined by D_LOC
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Min safe rear end
	1	Max safe front end

7.5.1.114 Q_LINK

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Name	Link Qualifier
Description	This qualifier is used to mark a balise group as linked or unlinked.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Unlinked
	1	Linked

7.5.1.115 Q_LOCACC

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Name	Accuracy of the balise location
Description	This Qualifier defines the absolute value of the accuracy of the Balise location (i.e., the value 63m identifies a location accuracy of +/- 63m)
Length of variable	Minimum Value	Maximum Value	Resolution/formula
6 bits	0 m	63 m	1 m

7.5.1.116 Q_LINKORIENTATION

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Name	Qualifier for the direction of the linked balise group
Description	Indicates whether the linked balise group will be overpassed by the train in nominal or reverse direction.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	The balise group is seen by the train in reverse direction
	1	The balise group is seen by the train in nominal direction

7.5.1.117 Q_LINKREACTION

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Name	linking reaction
Description	Qualifier for the reaction to be performed if a linking or a balise group message consistency problem occurs with the balise group linked to.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	00	Train trip
	01	Apply service brake
	10	No Reaction
	11	Spare

7.5.1.118 Q_LOOPDIR

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Name	Qualifier to indicate the direction of the loop
Description	Indicates LOOP -reference direction in relation to EOLM direction
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
	0	Opposite
1	Same

7.5.1.118.0 Q_LSSMA

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Name	Qualifier for the LSSMA display
Description	This qualifier tells whether the on-board has to toggle on/off the display of the lowest supervised speed within the MA
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Toggle off
	1	Toggle on

7.5.1.118.1 Q_LXSTATUS

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Name	LX Protection Status
Description	Indicates whether the LX is protected or not
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	LX is protected
	1	LX is not protected

7.5.1.118.2 Q_MAMODE

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Name	Qualifier to indicate the supervision of the beginning of the mode profile
Description	This qualifier defines whether the beginning of the mode profile shall be considered as temporary SvL, or if no temporary SvL shall be considered with respect to the mode profile.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No temporary SvL to be considered with respect to the mode profile
	1	Beginning of mode profile to be considered as temporary SvL

7.5.1.118.3 Q_MARQSTREASON

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Name	Reason for MA request sending
Description	Qualifier to indicate the reason why the MA request is sent to the RBC
Length of variable	Minimum Value	Maximum Value	Resolution/formula
5 bits			Bitset
Special/Reserved Values	xxxx1	Start selected by driver
	xxx1x	Time before reaching the perturbation location reached
	xx1xx	Time before a section timer/ LOA speed timer expires reached
	x1xxx	Track description deleted
	1xxxx	TAF up to level 2 transition location

7.5.1.119 Q_MEDIA

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Name	Qualifier to indicate the type of media
Description	Indicates whether it is a balise telegram or a loop message
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
	0	Balise
1	Loop

7.5.1.120 Q_MPOSITION

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Name	Qualifier for track kilometre direction.
Description	Qualifier to indicate the direction of counting of the geographical position track kilometre in relation to the geographical position reference balise group directionality.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit	0	1
Special/Reserved Values	0	Opposite (counting downwards if passed in nominal direction or counting upwards if passed in reverse direction)
	1	Same (counting upwards if passed in nominal direction or counting downwards if passed in reverse direction)

7.5.1.120.1 Q_NETWORKTYPE

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Name	Qualifier for the Radio Network type
Description	Indicates with which radio communication system(s) the trackside is fitted.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	0	FRMCS
	1	FRMCS + GSM -R
	2	GSM -R
	3	Spare

7.5.1.121 Q_NEWCOUNTRY

🔗

Name	New Country Qualifier
Description	Qualifier to indicate whether the next balise group is in the same country / railway administration as the one before inside the packet or not. For the first balise group in the packet, if = 0, it is the same country / railway administration as the one of the LRBG within the radio message, the one of balise group within the balise telegram giving the packet, or the one of the loop within the loop message giving the packet. Q_NEWCOUNTRY
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Same country / railway administration, no follows NID_C
	1	Not the same country / railway administration, follows NID_C

7.5.1.122 Q_NVDRIVER_ADHES

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Name	Qualifier for the modification of trackside adhesion factor by driver
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Not allowed
	1	Allowed

7.5.1.123 Q_NVEMRRLS

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Name	Qualifier Emergency Brake Release
Description	Qualifier to revoke the emergency brake command when the Permitted Speed limit is no longer exceeded or at standstill (for ceiling speed and target speed monitoring). This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Revoke emergency brake command at standstill
	1	Revoke emergency brake command when permitted speed supervision limit is no longer exceeded

7.5.1.123.1 Q_NVGUIPERM

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Name	Permission to use the guidance curve
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No
	1	Yes

7.5.1.123.2 Q_NVINHSMICPERM

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Name	Permission to inhibit the compensation of the speed measurement inaccuracy
Description	Qualifier to inhibit the compensation of the speed measurement inaccuracy for the calculation of the EBI related supervision limits. This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No
	1	Yes

7.5.1.123.3 Q_NVKINT

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Name	Qualifier for integrated correction factors
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No integrated correction factors follow
	1	Integrated correction factors follow

7.5.1.123.4 Q_NVKVINTSET

🔗

Name	Type of Kv_int set
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	00	Freight trains
	01	Conventional passenger trains
	10-11	Spare

7.5.1.123.5 Q_NVLOCACC

🔗

Name	Default accuracy of the balise location (absolute value)
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
6 bits	0 m	63 m	1 m

7.5.1.123.6 Q_NVSBFBPERM

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Name	Permission to use the service brake feedback
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No
	1	Yes

7.5.1.124 Q_NVSBTSMPERM

🔗

Name	Permission to use service brake in target speed monitoring
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No
	1	Yes

7.5.1.125 Q_ORIENTATION

🔗

Name	Co-ordinate system assigned to a single balise group
Description	The co-ordinate system is assigned by the RBC to a balise group reported by the on-board equipment as LRBG in a position report based on two balise groups.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Reverse
	1	Nominal

7.5.1.126 Q_OVERLAP

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Name	Qualifier to tell whether there is an overlap
Description	This variable is set to 1 if either an overlap exists or a release speed has to be specified
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No overlap information
	1	Overlap information to follow

7.5.1.126.1 Q_PBDSR

🔗

Name	Qualifier for Permitted Braking Distance
Description	Qualifier defining whether the permitted braking distance is to be achieved with the Service Brake or Emergency Brake
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	EB intervention requested
	1	SB intervention requested

7.5.1.126.2 Q_PLATFORM

🔗

Name	Platform position (relative to direction of authorised movement)
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	00	Platform on left side
	01	Platform on right side
	10	Platform on both sides
	11	Spare

7.5.1.127 Q_RBC

🔗

Name	Qualifier for communication session order
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Terminate communication session
	1	Establish communication session

7.5.1.128 Q_RIU

🔗

Name	Qualifier for communication session order
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Terminate communication session
	1	Establish communication session

7.5.1.129 Q_SCALE

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Name	Qualifier for the distance/length scale.
Description	Qualifier to indicate the same scale used for describing all distances/lengths inside the packet that contains . Q_SCALE
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	0	10 cm scale
	1	1 m scale
	2	10 m scale
	3	Spare

7.5.1.130 Q_SECTIONTIMER

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Name	Qualifier to indicate whether there is a Section Time-Out related to the section
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No Section Timer information
	1	Section Timer information to follow

7.5.1.131 Q_SLEEPSESSION

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Name	Session management for sleeping equipment
Description	Qualifier for a Sleeping onboard equipment to execute or not the “session establishment/termination” order
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Ignore session establishment/termination order
	1	Execute session establishment/termination order

7.5.1.132 Q_SRSTOP

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Name	“Stop if in Staff Responsible” information
Description	Specifies whether an onboard equipment in staff responsible has to stop or not
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Stop if in SR mode
	1	Go if in SR mode

7.5.1.133 Q_SSCODE

🔗

Name	Spread Spectrum Code for Euroloop
Description	Specifies the code required to receive telegrams from a specific Euroloop installation.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
4 bits	0	14
Special/Reserved Values	15	Code reserved for test purposes

7.5.1.134 Q_STATUSLRBG

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Name	Status of SoM position report in relation to the LRBG
Description	It provides the status of the SoM position report in relation to the LRBG
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	00	Invalid train position referred to an LRBG
	01	Valid train position referred to an LRBG
	10	No train position referred to an LRBG
	11	spare

7.5.1.134.1 Q_STOPLX

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Name	Qualifier for stopping in rear of the LX
Description	Indicates whether stopping the train in rear of a non protected LX is required
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No stop required
	1	Stop required

7.5.1.135 Q_SUITABILITY

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Name	Type of route suitability data
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
	00	Loading gauge
01	Axle load
10	Traction system
11	Spare

7.5.1.136 Q_TEXT

🔗

Name	Fixed message to be displayed.
Description	is a pointer to select a fixed text message from the defined table. The language selected by the driver for the DMI shall be used additionally as a qualifier to choose the appropriate language table. Q_TEXT
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0	255
Special/Reserved Values	0	“Level crossing not protected”
	1	“Acknowledgement”
	2-255	Spare

7.5.1.137 Q_TEXTCLASS

🔗

Name	Class of message to be displayed.
Description	specifies the class of the text message included in the same packet (either plain or fixed message) Q_TEXTCLASS
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	00	Auxiliary Information
	01	Important Information
	10	Spare
	11	Spare

7.5.1.138 Q_TEXTCONFIRM

🔗

Name	Qualifier for text confirmation
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
2 bits
Special/Reserved Values	00	No confirmation required
	01	Confirmation required
	10	Confirmation required: command application of the service brake when display end condition is fulfilled, unless the text has already been acknowledged by the driver
	11	Confirmation required: command application of the emergency brake when display end condition is fulfilled, unless the text has already been acknowledged by the driver

7.5.1.139 Q_TEXTDISPLAY

🔗

Name	Qualifier for the combination of text message sub-condition
Description	defines whether the start/end sub-conditions for text message are to be combined or not Q_TEXTDISPLAY
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No, display as soon as / until one of the sub-conditions is fulfilled
	1	Yes, display as soon as / until all sub-conditions are fulfilled

7.5.1.140 Q_TEXTREPORT

🔗

Name	Qualifier for reporting acknowledgement of text by driver
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No driver acknowledgement report required
	1	Driver acknowledgement report required

7.5.1.141 Q_TRACKINIT

🔗

Name	Qualifier for resuming the initial states of the related track description of the packet.
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	No initial states to be resumed, profile to follow
	1	Empty profile, initial states to be resumed

7.5.1.142 Q_UPDOWN

🔗

Name	Balise telegram transmission direction
Description	It defines the direction of the information in the balise telegram
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Down link telegram
	1	Up link telegram

7.5.1.142.1 Q_VBCO

🔗

Name	Qualifier for Virtual Balise Cover order
Description	Qualifier to set or remove a VBC
Length of variable	Minimum Value	Maximum Value	Resolution/formula
1 bit
Special/Reserved Values	0	Remove the Virtual Balise Cover
	1	Set the Virtual Balise Cover

7.5.1.143 T_CYCLOC

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Name	Time Interval between two position reports sent by the train
Description	The train must send its position every T_CYCLOC
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0 s	254 s	1s
Special/Reserved Values	255	

7.5.1.144 T_CYCRQST

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Name	Time between two cyclic requests for a movement authority
Description	As long as at least one reason for sending MA requests is applicable, the on-board will repeat its request every seconds T_CYCRQST
Length of variable	Minimum Value	Maximum Value	Resolution/formula
	0 s	254 s	1s
Special/Reserved Values	255	No repetition

7.5.1.144.1 T_LSSMA

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Name	Delay to toggle on the LSSMA display
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0 s	255 s	1 s

7.5.1.145 T_ENDTIMER

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Name	Validity time for the End section in the MA
Description	Time for which the End section is valid measured from the moment the train reaches the location defined by . D_ENDTIMERSTARTLOC
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 bits	0 s	1022 s	1 s
Special/Reserved Values	1023	

7.5.1.146 T_EMA

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Name	Validity time for the target speed at the End of Movement Authority
Description	Time for which the target speed is valid measured from the moment information is received
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 bits	0 s	1022 s	1 s
Special/Reserved Values	1023	

7.5.1.147 T_MAR

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Name	Time before reaching the perturbation location
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0 s	254 s	1 s
Special/Reserved Values	255	No MA request triggering with regards to this function

7.5.1.148 T_NVCONTACT

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Name	Maximum time since the time-stamp of the last received message.
Description	If the time elapsed from the time stamp of the last received message is greater than seconds, an appropriate action according to must be triggered. This variable is part of the National Values T_NVCONTACT M_NVCONTACT
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0 s	254 s	1s
Special/Reserved Values	255	

7.5.1.149 T_NVOVTRP

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Name	Maximum time for overriding the train trip
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0 s	255 s	1 s

7.5.1.150 T_OL

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Name	Overlap validity time
Description	The time span the train can expect the overlap to be available, measured from the moment the train reaches the location defined by . D_STARTOL
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 bits	0 s	1022 s	1 s
Special/Reserved Values	1023	

7.5.1.151 T_SECTIONTIMER

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Name	Validity time of a section in the MA
Description	Time for which the section is valid.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 bits	0 s	1022 s	1 s
Special/Reserved Values	1023	

7.5.1.152 T_TEXTDISPLAY

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Name	Duration for which a text shall be displayed
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 bits	0 s	1022 s	1 s
Special/Reserved Values	1023	No “time” sub-condition specified for the end condition of the display of the text

7.5.1.153 T_TIMEOUTRQST

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Name	Time before any section timer expires or the LOA speed timer expires
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
10 bits	0 s	1022 s	1 s
Special/Reserved Values	1023	No MA request triggering with regards to this function

7.5.1.154 T_TRAIN

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Name	Trainborne clock
Description	Time, according to trainborne clock, at which message is sent
Length of variable	Minimum Value	Maximum Value	Resolution/formula
32 bits	0 s	42949672.94 s	10 ms
Special/Reserved Values	4294967295	Unknown

7.5.1.154.1 T_VBC

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Name	VBC validity period
Description	Time period in which the VBC is applicable
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits	0 hours	6120 hours (255 days)	24 hours

7.5.1.155 V_AXLELOAD

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Name	Speed restriction related to axleload
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121 –127	Spare

7.5.1.156 V_DIFF

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Name	Absolute Positive Speed associated to a train category.
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121 – 127	Spare

7.5.1.157 V_EMA

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Name	Permitted speed at the End of Movement Authority
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121-127	Spare

7.5.1.157.1 V_LX

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Name	Permitted speed for the LX speed restriction
Description	Speed at which the LX can be passed when it is not protected
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121 – 127	Spare

7.5.1.158 V_MAIN

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Name	Signalling related speed restriction
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121-127	Spare
	= 0 means “trip order” V_MAIN

7.5.1.159 V_MAMODE

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Name	Required mode related speed
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121 – 126	Spare
	127	Use the national speed value of the required mode

7.5.1.160 V_MAXTRAIN

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Name	Maximum train speed.
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121 – 127	Spare

7.5.1.161 V_NVALLOWOVTRP

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Name	Speed limit allowing the driver to select the “override” function
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600km/h	5 km/h
Special/Reserved Values	121 – 127	Spare

7.5.1.161.1 V_NVKVINT

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Name	Speed step used to define the integrated correction factor Kv
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600km/h	5 km/h
Special/Reserved Values	121 – 127	Spare

7.5.1.161.2 V_NVLIMSUPERV

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Name	Limited Supervision mode speed limit
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600km/h	5 km/h
Special/Reserved Values	121 – 127	Spare

7.5.1.162 V_NVONSIGHT

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Name	On Sight mode speed limit
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121-127	Spare

7.5.1.163 V_NVSUPOVTRP

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Name	Override speed limit to be supervised when the “override” function is active
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600km/h	5 km/h
Special/Reserved Values	121 – 127	Spare

7.5.1.164 V_NVREL

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Name	Release Speed
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121-127	Spare

7.5.1.165 V_NVSHUNT

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Name	Shunting mode speed limit
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121-127	Spare

7.5.1.166 V_NVSTFF

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Name	Staff Responsible mode speed limit
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121-127	Spare

7.5.1.167 V_NVUNFIT

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Name	Unfitted mode speed limit
Description	This variable is part of the National Values
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121-127	Spare

7.5.1.168 V_RELEASEDP

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Name	Release speed associated with the danger point
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121-125	Spare
	126	Use onboard calculated release speed
	127	Use national value

7.5.1.169 V_RELEASEOL

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Name	Release speed associated with the overlap
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121-125	Spare
	126	Use onboard calculated release speed
	127	Use national value

7.5.1.170 V_REVERSE

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Name	Reversing mode speed limit
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121-127	Spare

7.5.1.170.1 V_SM

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Name	Supervised Manoeuvre mode speed limit
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121-127	Spare

7.5.1.171 V_STATIC

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Name	Basic static speed profile
Description	Basic static speed profile speed after discontinuity (k).
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121-126	Spare
	127	Non numerical value telling that the static speed profile description ends at (n) D_STATIC

7.5.1.172 V_TRAIN

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Name	Train speed
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121-126	Spare
	127	Standstill

7.5.1.173 V_TSR

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Name	Permitted speed for the temporary speed restriction
Description
Length of variable	Minimum Value	Maximum Value	Resolution/formula
7 bits	0 km/h	600 km/h	5 km/h
Special/Reserved Values	121 – 127	Spare

7.5.1.174 X_TEXT

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Name	Text String Element
Description	Text strings are used to transmit plain text messages. Each element of a text string contains a single character encoded as ISO 8859-1, also known as Latin Alphabet #1.
Length of variable	Minimum Value	Maximum Value	Resolution/formula
8 bits