PD IEC/TS 61375-2-4:2017 - Electronic railway equipment. Train communication network (TCN). TCN application profile

PD IEC/TS 61375-2-4:2017

Electronic railway equipment. Train communication network (TCN). TCN application profile

Status : Current   Published : February 2017



This part of IEC 61375 applies to the applications in trains, i.e. it covers the application profile for functions belonging to the Train Control and Monitoring System (TCMS). The application profile is based on the TCN communication system for the data communication between consists of the said trains. This document provides for a data interface with parameters and addressing of TCMS functions based on the communication profile laid out in IEC 61375‑2‑3.

This document is applicable in rolling stock requiring interoperable coupling and uncoupling. This part of IEC 61375 may be additionally applicable to closed trains and multiple unit trains when so agreed between purchaser and supplier.

The applicability of this part of IEC 61375 to the train communication network technologies as defined allows for interoperability of individual consists within trains.

The data communication systems inside consists are not covered by this document and are given only as example solutions to cope with the said TCN. In any case, proof of compatibility between a proposed train backbone and a proposed consist network will have to be brought by the supplier.

Special backup functions, which are used in cases when the train backbone is in a degraded condition are not in the scope of this document.

[Image removed.]

As illustrated in Figure 1 the purpose of this part of IEC 61375 is to create a general model that describes in a functional way the remote control of TCMS functions like “provide access and egress”. This document makes direct reference to IEC 61375‑2‑3, which covers data transmission on the Ethernet train backbone (ETB) and specifies the functions between the consists concerned (e.g. locomotives, multiple units and driving trailers) including the rules to set up the necessary data telegrams for transmission and process.

This document specifies the application profiles covering the train functions to:

  1. provide access and egress;

  2. control traction;

  3. control brake;

  4. provide diagnostics.


Functions b) to d) will be covered in a future revision of this document.

Standard NumberPD IEC/TS 61375-2-4:2017
TitleElectronic railway equipment. Train communication network (TCN). TCN application profile
Publication Date28 February 2017
Normative References(Required to achieve compliance to this standard)IEC 61375-2-3, IEC 61375-1, IEC 61375-2-1
Informative References(Provided for Information)ISO/IEC 7498-1
International RelationshipsIEC TS 61375-2-4:2017
DescriptorsCircuit networks, Railway vehicles, Electrical equipment, Railway equipment, Communication networks Railway applications
ISBN978 0 580 80360 4
File Size2.46 MB

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