SIST EN 61375-2-3:2016

SLOVENSKI STANDARD
01-februar-2016
Železniške elektronske naprave - Komunikacijsko omrežje vlaka (TCN) - 2-3. del:
Komunikacijski profil TCN (IEC 61375-2-3:2015)
Electronic railway equipment - Train Communication Network (TCN) - Part 2-3: TCN
communication profile (IEC 61375-2-3:2015)
Elektronische Betriebsmittel für Bahnen - Zug-Kommunikations-Netzwerk (TCN) - Teil 2-
3: TCN Kommunikationsprofil (IEC 61375-2-3:2015)
Matériel électronique ferroviaire - Réseau embarqué de train (TCN) - Partie 2-3: Profil de
communication TCN (IEC 61375-2-3:2015)
Ta slovenski standard je istoveten z: EN 61375-2-3:2015
ICS:
35.240.60 Uporabniške rešitve IT v IT applications in transport
transportu in trgovini and trade
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61375-2-3

NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2015
ICS 45.060
English Version
Electronic railway equipment - Train communication network
(TCN) - Part 2-3: TCN communication profile
(IEC 61375-2-3:2015)
Matériel électronique ferroviaire - Réseau embarqué de Elektronische Betriebsmittel für Bahnen - Zug-
train (TCN) - Partie 2-3: Profil de communication TCN Kommunikations-Netzwerk (TCN) - Teil 2-3: TCN
(IEC 61375-2-3:2015) Kommunikationsprofil
(IEC 61375-2-3:2015)
This European Standard was approved by CENELEC on 2015-08-13. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61375-2-3:2015 E
European foreword
The text of document 9/2029/FDIS, future edition 1 of IEC 61375-2-3, prepared by IEC/TC 9 "Electrical
equipment and systems for railways" was submitted to the IEC-CENELEC parallel vote and approved
by CENELEC as EN 61375-2-3:2015.
The following dates are fixed:
(dop) 2016-05-13
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2018-08-13
• latest date by which the national standards conflicting with
the document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 61375-2-3:2015 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 61131-3:2013 NOTE Harmonized as EN 61131-3:2013 (not modified).
IEC 61375-3-4 NOTE Harmonized as EN 61375-3-4.
IEC 61508-1:2010 NOTE Harmonized as EN 61508-1:2010 (not modified).
IEC 61784-3-3:2010 NOTE Harmonized as EN 61784-3-3:2010 (not modified).
IEC 62580 NOTE Harmonized in EN 62580 series.
ISO/IEC 7498-1 NOTE Harmonized as EN ISO/IEC 7498-1.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is
available here: www.cenelec.eu.

Publication Year Title EN/HD Year
IEC 61375-1 -  Electronic railway equipment - Train EN 61375-1 -
communication network (TCN) -
Part 1: General architecture
IEC 61375-2-1 -  Electronic railway equipment - Train EN 61375-2-1 -
communication network (TCN) -
Part 2-1: Wire Train Bus (WTB)
1)
IEC 61375-2-4 -  Electronic railway equipment - Train - -
communication network (TCN) -
Part 2-4: TCN Application profile
IEC 61375-2-5 -  Electronic railway equipment - Train EN 61375-2-5 -
communication network (TCN) -
Part 2-5: Ethernet train backbone
IEC 62280 -  Railway applications - Communication, - -
signalling and processing systems - Safety
related communication in transmission
systems
ISO/IEC 9646-6 1994 Information technology - Open Systems - -
Interconnection - Conformance testing
methodology and framework -
Part 6: Protocol profile test specification
ISO/IEC 9646-7 1995 Information technology - Open Systems - -
Interconnection - Conformance testing
methodology and framework -
Part 7: Implementation Conformance
Statements
1) At draft stage.
Publication Year Title EN/HD Year
ISO/IEC 17011 2004 Conformity assessment - General EN ISO/IEC 17011 2004
requirements for accreditation bodies
accrediting conformity assessment bodies
ISO/IEC 17025 2005 General requirements for the competence EN ISO/IEC 17025 2005
of testing and calibration laboratories

IEC 61375-2-3 ®
Edition 1.0 2015-07
INTERNATIONAL
STANDARD
colour
inside
Electronic railway equipment – Train communication network (TCN) –

Part 2-3: TCN communication profile

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 45.060 ISBN 978-2-8322-2775-6

– 2 – IEC 61375-2-3:2015  IEC 2015
CONTENTS
FOREWORD . 13
INTRODUCTION . 15
1 Scope . 16
2 Normative references . 17
3 Terms, definitions, abbreviations, acronyms, and conventions . 18
3.1 Terms and definitions . 18
3.2 Abbreviations and acronyms . 26
3.3 Conventions . 28
3.3.1 Base of numeric values . 28
3.3.2 Character strings and citations . 28
3.3.3 Naming conventions . 29
3.3.4 Diagram conventions . 29
3.3.5 Annotation of data structures . 29
4 Architecture . 30
4.1 General . 30
4.2 Physical train architecture (system breakdown). 31
4.2.1 General . 31
4.2.2 Train network architectures . 31
4.2.3 Closed Trains . 34
4.2.4 Directions . 36
4.2.5 Consist and vehicle basic properties . 37
4.3 Logical Train Architecture (Functional Breakdown) . 38
4.3.1 General . 38
4.3.2 Service classification . 38
4.3.3 Operational Services Overview . 39
4.3.4 Service Provider . 39
5 Common ETB framework . 39
5.1 General . 39
5.1.1 Overview . 39
5.1.2 Interoperability . 40
5.2 CSTINFO telegram . 40
5.2.1 General . 40
5.2.2 Closed train support (Option) . 40
5.2.3 Protocol . 40
5.2.4 CSTINFO classes . 40
5.2.5 CSTINFO Notification Message . 41
5.2.6 CSTINFO Request . 42
5.3 Train topology database . 44
5.3.1 General . 44
5.3.2 Computation of the TTDB . 46
5.3.3 Data structure . 50
5.3.4 Train Topology Database for multiple ETBs (Option) . 59
5.4 Service Addressing . 61
5.4.1 General . 61
5.4.2 TCN Domain Name System (TCN-DNS) . 61
5.4.3 TCN Domain Names . 62

IEC 61375-2-3:2015  IEC 2015 – 3 –
5.4.4 TCN-URI Scheme . 63
5.4.5 Mapping TCN-URI to IP address . 69
5.4.6 Support of other URI schemas . 73
5.5 TCN-DNS Server . 73
5.5.1 General . 73
5.5.2 Architecture . 73
5.5.3 Functional address resolution . 73
5.5.4 Protocol . 76
5.5.5 Multiple ETBs . 77
5.6 Data exchange . 77
5.6.1 General . 77
5.6.2 Operational network communication . 77
5.6.3 OMTS network communication . 78
5.6.4 Quality of Service (QoS) . 78
5.7 Service discovery . 78
5.8 Train Info Service . 78
6 Services of the communication profile – ETB Control Service . 78
6.1 General . 78
6.2 Communication model . 79
6.3 ECSP Supervision . 79
6.4 ECSP Interconnection . 79
6.4.1 General . 79
6.4.2 ETBCTRL telegram exchange selection . 80
6.4.3 ETBCTRL telegram transmission . 80
6.4.4 Structure of the ETBCTRL telegram . 80
6.4.5 Operational train directory computation process . 83
6.5 Function “Leading” . 86
6.5.1 General . 86
6.5.2 Function primitives . 86
6.5.3 ECSP to ECSP protocol . 88
6.6 Function Confirmation/Correction . 92
6.6.1 General . 92
6.6.2 Function primitives . 92
6.6.3 ECSP to ECSP protocol . 94
6.6.4 State diagram . 97
6.6.5 ECSC Failure . 99
6.7 Computation of the operational train directory . 99
6.7.1 General . 99
6.7.2 Action setCorrInfo . 100
6.7.3 Action computeOpTrnDir . 103
6.8 Function Sleep Mode (Option) . 106
6.8.1 General . 106
6.8.2 Sleep Mode Use Case (informal) . 106
6.8.3 Exclusivity . 108
6.8.4 Function primitives . 108
6.8.5 ECSP to ECSP protocol . 110
Annex A (normative) Train Real-Time Data Protocol (TRDP) . 114
A.1 General . 114
A.2 Lower Layers . 114

– 4 – IEC 61375-2-3:2015  IEC 2015
A.2.1 Data link layer . 114
A.2.2 Network Layer . 114
A.2.3 Transport Layer . 115
A.3 TRDP FCS Computation . 116
A.4 Interaction between TRDP user and TRDP Layer . 118
A.5 Communication Identifier (ComId) . 118
A.6 Process Data . 120
A.6.1 Communication model . 120
A.6.2 Roles . 120
A.6.3 Communication pattern . 120
A.6.4 Addressing. 125
A.6.5 PD-PDU . 125
A.6.6 Interaction between application and TRDP protocol layer . 128
A.6.7 Topography counter check . 135
A.6.8 State Machine . 136
A.7 Message Data . 140
A.7.1 Communication model . 140
A.7.2 Roles . 141
A.7.3 Communication pattern . 141
A.7.4 Addressing. 142
A.7.5 MD-PDU . 142
A.7.6 Interaction between application and TRDP layer . 145
A.7.7 Topography counter check . 150
A.7.8 MD protocol state machine . 151
A.7.9 TCP Connection Handling . 160
A.8 Message data echo server (option) . 161
Annex B (normative) Safe Data Transmission (SDTv2) . 162
B.1 General . 162
B.2 Overview of SDTv2 (informal) . 162
B.3 Safety functional requirements . 163
B.4 Safety measures . 163
B.5 Operational states of the SDTv2 channel . 164
B.6 Data presentation . 165
B.7 SC-32 . 165
B.8 SID . 168
B.9 Vital Data Packet . 169
B.10 Exclusivity . 170
B.11 Configuration time parameters. 170
B.12 Safe data source (SDSRC) . 170
B.12.1 General . 170
B.12.2 Safe Data Preparation (Application) . 170
B.12.3 Safe data sending . 171
B.13 Safe data sink (SDSINK) . 172
B.13.1 General . 172
B.13.2 Definitions . 173
B.13.3 SDSINK States . 174
B.13.4 VDP Sampling. 175
B.13.5 VDP Integrity Check . 176
B.13.6 Sink time supervision . 177

IEC 61375-2-3:2015  IEC 2015 – 5 –
B.13.7 Guard time check . 177
B.13.8 Latency monitoring . 178
B.13.9 Channel monitoring . 180
B.13.10 SDTv2 Application Interface . 182
B.13.11 Change of operational train composition . 182
B.14 Diagnosis and statistics . 182
B.15 Safe data transmission over MVB (informative) . 183
B.15.1 General . 183
B.15.2 MVB-VDP . 183
B.15.3 SDTV2 protocol deviations for MVB . 184
B.16 SDTv2 with TRDP message data . 184
Annex C (informative) Train Real-Time Data Protocol Configuration (TRDP) . 185
C.1 General . 185
C.2 Device Parameters . 186
C.3 Device Configuration Parameters . 187
C.4 Bus Interface List . 187
C.4.1 General . 187
C.4.2 Bus Interface Configuration . 188
C.5 Mapped Device Parameters . 199
C.5.1 General . 199
C.5.2 Mapped Bus Interface Parameters . 200
C.6 Communication Parameters (ComPar) . 202
C.6.1 General . 202
C.6.2 Default Communication Parameters . 203
C.7 DataSet Parameters . 203
C.7.1 General . 203
C.7.2 DataSet Element . 205
C.7.3 Examples of DataSets . 207
Annex D (informative) Access to End Device (ED) statistics . 211
D.1 General . 211
D.2 Structures . 211
D.2.1 General . 211
D.2.2 tlc_getSubsStatistics . 213
D.2.3 tlc_getPubStatistics. 213
D.2.4 tlc_getUdpListStatistics, tlc_getTcpListStatistics . 213
D.2.5 tlc_getRedStatistics . 214
D.3 ED interface for statistic data access . 214
D.3.1 General . 214
D.3.2 TRDP interface . 214
Annex E (informative) Service interface . 216
E.1 General . 216
E.2 Service provider . 217
E.2.1 Proxies . 217
E.2.2 Performance . 217
E.3 ECSP interface . 217
E.3.1 General . 217
E.3.2 ECSP control telegram . 217
E.3.3 ECSP status telegram . 219
E.3.4 ECSP Confirmation/Correction Request . 221

– 6 – IEC 61375-2-3:2015  IEC 2015
E.4 TTDB manager interface . 224
E.4.1 General . 224
E.4.2 TTDB status information . 224
E.4.3 TTDB notification . 225
E.4.4 TTDB information – train directory . 225
E.4.5 TTDB information – static consist information . 226
E.4.6 TTDB information – train network directory information . 227
E.4.7 Operational train directory information . 228
E.4.8 Read TTDB . 229
E.5 DNS server interface . 230
E.5.1 DNS standard interface . 230
E.5.2 DNS TCN interface . 230
E.6 ETBN control interface . 234
E.6.1 General . 234
E.6.2 ETBN control and status data . 235
E.6.3 ETBN train network directory . 238
Annex F (normative) Communication profile conformance test guideline . 240
F.1 General . 240
F.2 Scope of conformance test . 240
F.3 Conformance test overview . 241
F.4 Test laboratory . 241
F.4.1 General . 241
F.4.2 Tasks . 241
F.5 Guideline for writing conformance test specifications . 242
F.5.1 Overview of the main components . 242
F.5.2 Protocol Implementation Conformance Statement (PICS) . 242
F.5.3 Abstract test architecture . 243
F.5.4 Protocol Implementation eXtra Information for Testing (PIXIT) . 243
F.5.5 Test suite structure . 243
F.6 Abstract test architecture (option) . 243
F.6.1 General . 243
F.6.2 Test architecture with one ETB. 244
F.6.3 Test architecture for multiple ETB . 244
F.6.4 Set-up for automatic test . 244
F.7 Test of conformity to the common ETB framework . 245
F.7.1 General . 245
F.7.2 Test of CSTINFO telegram . 245
F.7.3 Test of TTDB . 245
F.7.4 Test of service addressing and TCN-DNS server . 245
F.7.5 Test of data exchange . 246
F.7.6 Test of service discovery . 247
F.7.7 Test of train info service . 247
F.8 ETB Control Service conformity test . 247
F.8.1 General . 247
F.8.2 Test control interface for the test of ETB control services . 247
F.9 Echo function . 255
F.9.1 General . 255
F.9.2 TRDP echo test . 255
F.9.3 Reverse-Echo test . 256

IEC 61375-2-3:2015  IEC 2015 – 7 –
F.10 Statement of conformity . 257
Annex G (informative) SNMP Management Information Base (MIB) . 259
G.1 General . 259
G.2 TTDB-MIB . 259
G.3 TRDP-MIB. 264
Bibliography . 275

Figure 1 – IEC 61375-2-3 as connecting element between train backbone and
application . 17
Figure 2 – Train structure in accordance to IEC 61375-1 (example) . 31
Figure 3 – Train structure seen from viewpoint of the communication profile (example) . 31
Figure 4 – Train network (example) . 32
Figure 5 – Possible couplings of operational network and multimedia network . 33
Figure 6 – Gateway between operational network and multimedia network (example) . 34
Figure 7 – Example: three coupled Consists . 35
Figure 8 – Example: Closed Train . 35
Figure 9 – Service classification . 38
Figure 10 – CSTINFO notification data . 42
Figure 11 – CSTINFOCTRL telegram . 44
Figure 12 – TTDB management block diagram . 44
Figure 13 – TTDB Content . 45
Figure 14 – TTDB computation block diagram . 46
Figure 15 – Train directory computation state diagram . 47
Figure 16 – TTDB class diagram (example) . 51
Figure 17 – TTDB adoption (in this example shown for the first consist) . 60
Figure 18 – TCN-DNS name space with division into zones . 62
Figure 19 – TCN-URI Schema . 64
Figure 20 – Directions, orientations and numbers in train . 65
Figure 21 – TCN-URI resolving in a train . 74
Figure 22 – DNS protocol (case a without, case b with TTDB interrogation) . 76
Figure 23 – ETB control service model . 79
Figure 24 – ETBCTRL telegram exchange . 80
Figure 25 – ETBCTRL telegram . 81
Figure 26 – Operational train directory computation block diagram . 84
Figure 27 – ETBCTRL processing state diagram. 85
Figure 28 – Leading sequence diagram . 87
Figure 29 – Leading vehicle function state machine block diagram . 89
Figure 30 – State diagram of leading function . 90
Figure 31 – Confirmation sequence diagram . 93
Figure 32 – Confirmation/correction function state machine block diagram . 94
Figure 33 – Correction/confirmation protocol sequence chart (example) . 96
Figure 34 – Unconfirm protocol sequence chart (example) . 97
Figure 35 – Confirmation/correction state diagram . 98
Figure 36 – Action “setCorrInfo” block diagram . 100

– 8 – IEC 61375-2-3:2015  IEC 2015
Figure 37 – Train composition consistency check examples . 103
Figure 38 – Computation of the operational train directory . 104
Figure 39 – computeOpTrnDir state chart . 105
Figure 40 – Use case “sleep mode” state diagram . 108
Figure 41 – Sleep control sequence diagram . 109
Figure 42 – Sleep control function state machine block diagram . 110
Figure 43 – Sleep request protocol sequence chart (example) . 111
Figure 44 – Sleep control state diagram . 112
Figure A.1 – Overview of the protocol stack . 114
Figure A.2 – FCS Computation . 116
Figure A.3 – FCS Table . 117
Figure A.4 – TRDP service model . 118
Figure A.5 – PD push pattern (point to point) . 121
Figure A.6 – PD push pattern (point to multipoint) . 121
Figure A.7 – PD pull pattern (point to point, sink knows source) . 122
Figure A.8 – PD pull pattern (multipoint to point, sink does not know source) . 123
Figure A.9 – PD pull pattern (point to multipoint, sink knows source) . 124
Figure A.10 – PD pull pattern (multipoint to multipoint, sink does not know source) . 125
Figure A.11 – PD-PDU . 126
Figure A.12 – Interaction sequence chart for PD pull pattern . 133
Figure A.13 – Interaction sequence chart for PD push pattern . 134
Figure A.14 – Interaction sequence chart for redundant PD handling. 135
Figure A.15 – PD State diagram publisher . 136
Figure A.16 – PD State diagram requester .
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