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1 EESTI STANDARD EVS-EN :2012 Raudtee elektroonikaseadmed. Rongisisene kommunikatsioonivõrk. Osa 2-1: Juhtmeline rongisiin Electronic railway equipment - Train communication network (TCN) - Part 2-1: Wire Train Bus (WTB)

2 EESTI STANDARDI EESSÕNA NATIONAL FOREWORD See Eesti standard EVS-EN :2012 sisaldab Euroopa standardi EN :2012 ingliskeelset teksti. This Estonian standard EVS-EN :2012 consists of the English text of the European standard EN :2012. Standard on jõustunud sellekohase teate avaldamisega EVS Teatajas. Euroopa standardimisorganisatsioonid on teinud Euroopa standardi rahvuslikele liikmetele kättesaadavaks Standard on kättesaadav Eesti Standardikeskusest. This standard has been endorsed with a notification published in the official bulletin of the Estonian Centre for Standardisation. Date of Availability of the European standard is The standard is available from the Estonian Centre for Standardisation. Tagasisidet standardi sisu kohta on võimalik edastada, kasutades EVS-i veebilehel asuvat tagasiside vormi või saates e-kirja meiliaadressile standardiosakond@evs.ee. ICS Standardite reprodutseerimise ja levitamise õigus kuulub Eesti Standardikeskusele Andmete paljundamine, taastekitamine, kopeerimine, salvestamine elektroonsesse süsteemi või edastamine ükskõik millises vormis või millisel teel ilma Eesti Standardikeskuse kirjaliku loata on keelatud. Kui Teil on küsimusi standardite autorikaitse kohta, võtke palun ühendust Eesti Standardikeskusega: Aru 10, Tallinn, Eesti; telefon ; e-post info@evs.ee The right to reproduce and distribute standards belongs to the Estonian Centre for Standardisation No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, without a written permission from the Estonian Centre for Standardisation. If you have any questions about copyright, please contact Estonian Centre for Standardisation: Aru 10, Tallinn, Estonia; phone ; info@evs.ee

3 EUROPEAN STANDARD EN NORME EUROPÉENNE EUROPÄISCHE NORM August 2012 ICS English version Electronic railway equipment - Train communication network (TCN) - Part 2-1: Wire Train Bus (WTB) (IEC :2012) Matériel électronique ferroviaire - Réseau embarqué de train (TCN) - Partie 2-1: Bus de Train Filaire (WTB) (CEI :2012) Elektronische Betriebsmittel für Bahnen - Zug-Kommunikations-Netzwerk - Teil 2-1: WTB - Wire Train Bus Konformitätsprüfung (IEC :2012) This European Standard was approved by CENELEC on 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. CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Management Centre: Avenue Marnix 17, B Brussels 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN :2012 E

4 EN EVS-EN : Foreword The text of document 9/1642/FDIS, future edition 1 of IEC , 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 :2012. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement latest date by which the national standards conflicting with the document have to be withdrawn (dop) (dow) 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. This document has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this document. Endorsement notice The text of the International Standard IEC :2012 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC NOTE Harmonized as EN

5 - 3 - EVS-EN EN :2012 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 When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC Electronic equipment used on rail vehicles - - IEC Series Rectangular connectors for frequencies below MHz IEC Electronic railway equipment - Train communication network - Part 1: TCN - Train Communication Network general architecture EN IEC Electronic railway equipment - Train EN communication network (TCN) - Part 2-2: Wire Train Bus conformance testing IEC Electronic railway equipment - Train communication network (TCN) - Part 3-1: Multifunction Vehicle Bus (MVB) EN ISO/IEC Information technology - Telecommunications - - and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 2: Logical link control ISO/IEC 8824 ISO/IEC 8825 Series Information technology - Abstract Syntax Notation One (ASN.1) Series Information technology - ASN.1 encoding rules ISO/IEC Information technology - 8-bit single-byte coded graphic character sets - Part 1: Latin alphabet No.1 ISO/IEC 9646 Series Information technology - Open Systems Interconnection - Conformance testing methodology and framework ISO/IEC Information technology - Universal multipleoctet coded character set (UCS) ISO/IEC Information technology - Telecommunications - - and information exchange between systems - High-level data link control (HDLC) procedures ITU-T Recommendation V.24 ITU-T Recommendation Z List of definitions for interchange circuits between data terminal equipment (DTE) and data circuit-terminating equipment (DCE) Specification and Description Language (SDL)- -

6 EN EVS-EN : Publication Year Title EN/HD Year IEEE Binary floating-point arithmetic - - UIC CODE Information transmission in the train (trainbus) - - UIC CODE Diagnostics on passenger rolling stock - -

7 - 5 - EVS-EN EN :2012 Annex ZZ (informative) Coverage of Essential Requirements of EU Directives This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and within its scope the standard covers all relevant essential requirements as given in Annex III of the EU Directive 2008/57/EC. Compliance with this standard provides one means of conformity with the specified essential requirements of the Directive concerned. WARNING: Other requirements and other EU Directives may be applicable to the products falling within the scope of this standard.

8 2 EVS-EN :2012 IEC:2012 CONTENTS FOREWORD INTRODUCTION Scope Normative references Terms and definitions, abbreviations, conventions Terms and definitions Abbreviations Conventions Base of numeric values Naming conventions Time naming conventions Procedural interface conventions Specification of transmitted data State diagram conventions General considerations Interface between equipment Interface between consists Real-Time Protocols Network Management Configurations Structure of a standard device Conformance test Physical layer Topology Bus sections Couplers Nodes Consist orientation Consist specification (informal) Medium specifications Topology Duplicated medium (option) Bus Configuration rules Cable specification Shielding concept Terminator Medium attachment Node connection points identification Direct node attachment Indirect node attachment Connector (optional) Node specifications Node elements Node and switch settings Duplicated Line Units (option) Line Unit specifications... 58

9 EVS-EN :2012 IEC: Galvanic separation Insertion losses of a Line Unit Switches specifications Shield connection to a Line Unit Fritting (option) Transceiver specifications Conventions Transmitter Receiver specifications Medium-dependent signalling Frame encoding and decoding Duplicated line handling (option) Line Unit interface Link Layer Control Addressing Frames and telegrams Frame_Data format Telegram timing Elements of the HDLC Frame Link Control Field Handling of Attention, Change and Inhibit Size, FCS and protocol errors Telegram formats and protocols Link Data field Process Data Message Data Supervisory Data Detection telegram Presence telegram Status telegram Set to Intermediate telegram Naming telegram Unname telegram Set to End telegram Topography telegram Medium allocation Organisation Periodic Phase Sporadic phase Inauguration General Descriptors Detection of other compositions (informal) State diagrams of the inauguration Link layer interface Link layer layering Link Process_Data_Interface Link Message_Data_Interface Link management interface

10 4 EVS-EN :2012 IEC: Real-Time protocols General Contents of this clause Structure of this clause Variables Services and Protocols General Link layer Interface for Process_Data Application interface for Process_Variables Messages Services and Protocols General Reference station Message packets handling Message Link layer Message Network Layer Message transport layer Multicast Transport Protocol (option) Message session layer Message Presentation Layer Message Application layer Presentation and encoding of transmitted and stored data Purpose Data ordering Notation for the primitive types Structured types Alignment Notation for special types Application Layer Process Data Marshalling Marshalling Types Marshalling Modes Data Paths in PDM PDM Operation PDM Functions WTB Line Fault Location Detection Architecture Protocol Overview LFLD Sequence End Node State Machine (Testing Node) Intermediate Node State Machine (Segmenting Node) Disturbed Line selection Location Detection Train Network Management General Contents of this clause Structure of this clause Manager, Agents and interfaces Manager and Agent Management messages protocol Interfaces

11 EVS-EN :2012 IEC: Managed objects Object Attributes Station objects WTB link objects Variable objects Messenger objects Domain objects Task objects Clock object Journal object Equipment object Services and management messages Notation for all management messages Station services WTB link services Variables services Messages services Domain services Task services Clock services Journal Service Equipment Service Interface Procedures Manager interface (MGI) Agent interface Bibliography Figure 1 Wire Train Bus Figure 2 Layering of the TCN Figure 3 State transition example Figure 4 Interfaces between equipment Figure 5 Interfaces between consists Figure 6 Train Bus and Consist network Figure 7 TCN configurations Figure 8 TCN WTB device configuration options Figure 9 Train Composition (two Intermediate Nodes shown) Figure 10 Vehicle measurement Figure 11 Connected nodes in regular operation Figure 12 Double-line attachment Figure 13 Grounded shield concept Figure 14 Floating shield concept Figure 15 Terminator Figure 16 Direct node attachment (optional double-line) Figure 17 Indirect attachment Figure 18 WTB connector, front view Figure 19 Example of MAU Structure... 56

12 6 EVS-EN :2012 IEC:2012 Figure 20 Node with redundant Line Units Figure 21 Attenuation measurement Figure 22 Shield grounding in the Line Unit Figure 23 Fritting source and load Figure 24 Transmitter fixtures Figure 25 Pulse wave form at transmitter Figure 26 Signal and idling at transmitter Figure 27 Receiver signal envelope Figure 28 Receiver edge distortion Figure 29 Idealised frame on the line (16 bit Preamble shown) Figure 30 Bit encoding Figure 31 Preamble Figure 32 End Delimiter Figure 33 Valid frame, RxS, CS and SQE signals Figure 34 Garbled frame, RxS, CS, SQE signals Figure 35 Redundant Lines (as seen at a receiver) Figure 36 Line_Disturbance signals Figure 37 HDLC Frame structure Figure 38 Telegram timing Figure 39 Example of Interframe spacing Figure 40 Frame spacing measured at the master side Figure 41 Frame spacing at the slave Figure 42 HDLC Data format Figure 43 Format of HDLC Data Figure 44 Process Data telegram Figure 45 Format of Process Data Request Figure 46 Format of Process Data Response Figure 47 Message Data telegram Figure 48 Format of Message Data Request Figure 49 Format of Message Data Response Figure 50 Supervisory telegram Figure 51 Detection telegram Figure 52 Format of Detect Request Figure 53 Format of Detect Response Figure 54 Presence telegram Figure 55 Format of Presence Request Figure 56 Format of Presence Response Figure 57 Status telegram Figure 58 Format of Status Request Figure 59 Format of Status Response Figure 60 Set-to-Intermediate telegram Figure 61 Format of SetInt Request Figure 62 Format of SetInt Response... 91

13 EVS-EN :2012 IEC: Figure 63 Naming telegram Figure 64 Format of Naming Request Figure 65 Format of Naming Response Figure 66 Unnaming telegram Figure 67 Format of Unname Request Figure 68 Set to End telegram Figure 69 Format of SetEnd Request Figure 70 Format of SetEnd Response Figure 71 Topography telegram Figure 72 Format of Topography Request Figure 73 Format of Topography Response Figure 74 Structure of the Basic Period Figure 75 Node position numbering Figure 76 Format of Node Descriptor Figure 77 Format of Node Report Figure 78 Format of User Report Figure 79 Format of Composition Strength Figure 80 Master_Report Figure 81 Format of Topo Counter Figure 82 Format of Master Topo Figure 83 Timing Diagram of detection protocol Figure 84 Major node states and application settings Figure 85 Node processes (End Setting) Figure 86 AUXILIARY_PROCESS states Figure 87 NAMING_RESPONSE macro Figure 88 States of MAIN PROCESS Figure 89 Macro START_NODE Figure 90 Procedure REQUEST_RESPONSE Figure 91 Procedures SET_TO_INT and SET_TO_END Figure 92 Macro INIT_MASTER Figure 93 Macro NAMING_MASTER Figure 94 Macro ASK_END Figure 95 Procedure NAME_ONE Figure 96 Macro TEACHING_MASTER Figure 97 Macro UNNAMING_MASTER Figure 98 Macro REGULAR_MASTER Figure 99 Macro CHECK_DESC Figure 100 Macro PERIODIC_POLL Figure 101 Macro MESSAGE_POLL Figure 102 States UNNAMED_SLAVE Figure 103 States NAMED_SLAVE Figure 104 Macro LEARNING_SLAVE Figure 105 Macro REGULAR_SLAVE

14 8 EVS-EN :2012 IEC:2012 Figure 106 Link layer layering Figure 107 Structure of the Train Communication Network Figure 108 Real-Time Protocols layering Figure 109 LPI primitives exchange Figure 110 Check_Variable Figure 111 Individual access Figure 112 Set access Figure 113 Cluster access Figure 114 Terminal station Figure 115 Router station between WTB and MVB Figure 116 Gateway station between WTB and Consist network Figure 117 Packet format Figure 118 Link layer data transmission Figure 119 Link_Message_Data_Interface (LMI) Figure 120 Example of MVB Message_Data frame Figure 121 Example of WTB Message_Data frame Figure 122 LMI primitives Figure 123 Network layer on a Node Figure 124 Encoding of the Network_Address Figure 125 Building of the addresses in an outbound packet Figure 126 Network address encoding on the train bus Figure 127 Transport packet exchange Figure 128 Packet formats (transport layer body) Figure 129 State transition diagram of the MTP Figure 130 Time-out SEND_TMO Figure 131 Time-out ALIVE_TMO Figure 132 Transport interface Figure 133 Multicast message with no retransmission Figure 134 Short multicast message with no BD packets and no loss Figure 135 Exchange with lost packets Figure 136 Packet formats Figure 137 Protocol machine states Figure 138 Session layer transfer Figure 139 Session_Header in Call_Message (of type Am_Result) Figure 140 Application_Messages_Interface Figure 141 Encoding of AM_ADDRESS Figure 142 Process Data Marshalling Figure 143 PDM Data Paths Figure 144 PDM Operation Figure 145 PDM Invalidate Variable or Function result Figure 146 PDM Operation Figure 147 PDM Validty check Figure 148 LFLD Architecture

15 EVS-EN :2012 IEC: Figure 149 LFLD sequence Figure 150 End node state machine Figure 151 LFLD process, SN at node Figure 152 LFLD process, SN at node Figure 153 LFLD process, SN at node 1, attachment in direction Figure 154 Management messages Figure 155 Agent Interface on a (gateway) Station Figure 156 Station_Status Table 1 Template for the specification of an interface procedure Table 2 Example of message structure Table 3 Example of textual message form (corresponding to Table 2) Table 4 State transitions table Table 5 Interoperability testing Table 6 WTB connector pin assignment Table 7 Signals of the Line Unit Interface Table 8 Link Control encoding Table 9 NodeControl data structure Table 10 MyStatus data structure Table 11 Shared Variables of a node Table 12 Variables of Main Process Table 13 Lists of Main Process Table 14 START_NODE Table 15 MASTER STATES Table 16 SLAVE STATES Table 17 Time constant values Table 18 LPI primitives Table 19 Var_Size and Var_Type encoding in a PV_Name Table 20 LMI primitives Table 21 Routing situations Table 22 Routing of packets coming from the transport layer Table 23 Routing of packets coming from a consist network Table 24 Routing of packets coming from the train bus Table 25 Message Transport Control encoding Table 26 Connect_Request Table 27 Connect_Confirm Table 28 Disconnect_Request Table 29 Disconnect_Confirm Table 30 Data_Packet Table 31 Ack_Packet Table 32 Nak_Packet Table 33 Broadcast_Connect (BC1, BC2, BC3) Table 34 Broadcast_Data

16 10 EVS-EN :2012 IEC:2012 Table 35 Broadcast_Repeat Table 36 Broadcast_Stop (BSC, BSO) Table 37 MTP states Table 38 MTP incoming events Table 39 MTP outgoing events Table 40 MTP control parameters Table 41 MTP auxiliary variables Table 42 MTP time-outs (worst case) Table 43 Implicit actions Table 44 Compound actions Table 45 Producer states and transitions Table 46 Consumer states and transitions Table 47 TMI primitives Table 48 States of the MCP machine Table 49 Incoming Events Table 50 Outgoing Events Table 51 Control fields in packets Table 52 Auxiliary variables Table 53 MCP constants Table 54 MCP time-outs Table 55 MCP Compound actions Table 56 Filtering of BR packets Table 57 MCP Producer state event table Table 58 MCP Consumer state event table Table 59 AMI primitives Table 60 Address constants Table 61 System Address and User Address

17 EVS-EN :2012 IEC: INTRODUCTION This part of IEC specifies one component of the Train Communication Network, the Wire Train Bus (WTB), a serial data communication bus designed primarily, but not exclusively, for interconnecting consists which are frequently coupled and uncoupled, as is the case of international UIC trains. Figure 1 illustrates the WTB application. Node Node Node Figure 1 Wire Train Bus This standard defines these interfaces as connections to a data communication network, called the Train Communication Network (TCN). The TCN has a hierarchical structure with two levels of networks, a Train Backbone and a Consist network: a) for interconnecting consists in Open Trains (see definition) such as international UIC trains, this standard specifies a Train Bus called the Wire Train Bus (WTB); b) for connecting standard on-board equipment a Consist network e.g. the Multifunction Vehicle Bus (MVB) can be used. In the TCN architecture, WTB features Real-Time Protocols, which offer two communication services: c) Process Variables, a distributed, real-time database, periodically refreshed through broadcasting; d) messages, transmitted on demand either as: unicast messages (point-to-point) or/and multicast messages. WTB in the TCN offers a common Network Management, which allows debugging, commissioning and maintenance over the network. The Consist network MVB shares Real-Time Protocols and Network Management with WTB. Other implementations of consist networks need adaption to the Real-Time Protocols and Network Management of WTB. The TCN is structured similarly to the Open System Interconnection model defined in ISO/IEC (see Figure 2).

18 14 EVS-EN :2012 IEC:2012 Application Layer 7 Network Management User Application_Layer_Interface (ALI) 8 Real-Time Protocols 6 Process Variables Messages Presentation Session Transport Network Link_Layer_Interface (LLI) Wire Train Bus 4 5 Consist network specified in IEC x Link Physical General normative elements 3 NOTE The circled numbers refer to the clauses of this standard. Figure 2 Layering of the TCN This standard has been, for editorial reasons, divided into eight clauses: Clause 1 Scope; Clause 2 Normative references; Clause 3 Terms and definitions, abbreviations, conventions; Clause 4 and 5: Wire Train Bus, Physical layer and Link Layer Control; Clause 6: Real-Time protocols, Variables: Link Layer Interface and Application Layer Interface; Messages: Link Layer Interface, Protocols, Application Layer Interface; Data Representation; Clause 7: Application Layer Process Data Marshalling WTB Line Fault Location Detection Clause 8: Train Network Management Configuration, supervision and control of the network.

19 EVS-EN :2012 IEC: ELECTRONIC RAILWAY EQUIPMENT TRAIN COMMUNICATION NETWORK (TCN) Part 2-1: Wire Train Bus (WTB) 1 Scope This part of IEC applies to data communication in Open Trains, i.e. it covers data communication between consists of the said open trains and data communication within the consists of the said open trains. The applicability of this standard to the train communication bus (WTB) allows for interoperability of individual consists within Open Trains in international traffic. The data communication bus inside consists (e.g. MVB) is given as recommended solution to cope with the said TCN. In any case, proof of compatibility between WTB and a proposed consist network will have to be brought by the supplier. This standard may be additionally applicable to closed trains and multiple unit trains when so agreed between purchaser and supplier. NOTE 1 For a definition of Open Trains, Multiple Unit Trains and Closed Trains, see Clause 3. NOTE 2 Road vehicles such as buses and trolley buses are not considered in this standard. 2 Normative references 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. IEC 60571, Electronic equipment used on rail vehicles IEC (all parts), Rectangular connectors for frequencies below 3 MHz IEC , Electronic railway equipment Train communication network (TCN) Part 1: General architecture IEC :2012, Electronic railway equipment Train communication network (TCN) Part 2-2: Wire Train Bus conformance testing IEC , Electronic railway equipment Train communication network (TCN) Part 3-1: Multifunction Vehicle Bus (MVB) ISO/IEC , Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Part 2: Logical link control ISO/IEC 8824 (all parts), Information technology Abstract Syntax Notation One (ASN.1) ISO/IEC 8825 (all parts), Information technology ASN.1 encoding rules

20 16 EVS-EN :2012 IEC:2012 ISO/IEC , Information technology 8-bit single-byte coded graphic character sets Part 1: Latin alphabet No. 1 ISO/IEC 9646 (all parts), Information technology Open Systems Interconnection Conformance testing methodology and framework ISO/IEC 10646, Information Technology Universal Multipl-Octet Coded Character Set (UCS) ISO/IEC 13239, Information technology Telecommunications and information exchange between systems High-level data link control (HDLC) procedures ITU-T Recommendation V24, List of definitions for interchange circuits between data terminal equipment (DTE) and data-circuit terminating equipment (DCE) ITU-T Recommendation Z.100, Specification and Description Language (SDL) IEEE 754, Standard for Binary Floating-Point Arithmetic UIC CODE 556, Information transmission in the train (train-bus) UIC CODE 557, Diagnostics on passenger rolling stock 3 Terms and definitions, abbreviations, conventions 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. NOTE Keywords in this standard are written with the first letter of each word in upper case and, when they are composed of two or several words, these are joined by an underscore. This convention allows keywords to be tracked in the documents address identifier of a communication partner, of which several types exist, depending on the layer agent application process in a Station which accesses the local managed objects on behalf of the Manager Aperiodic Data transmission of Process Data on a demand basis. This service is not used Application Layer upper layer in the OSI model, interfacing directly to the Application Application Layer Interface definition of the services offered by the Application Layer Application Messages Adapter code directly called by the application implementing the Messages services