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IEC 61375-1 Ed. 4.0 en:2026

Electronic railway equipment - Train communication network (TCN) - Part 1: General architecture
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IEC 61375-1 Ed. 4.0 en:2026

Electronic railway equipment - Train communication network (TCN) - Part 1: General architecture

IEC 61375-1 Ed. 4.0 en:2026
IEC 61375-1:2026 applies to the architecture of data communication systems in open trains, i.e. it covers the architecture of a communication system for the data communication between vehicles of the said open trains, the data communication within the vehicles and the data communication from train to the ground. The applicability of IEC 61375-1 to the train network technologies allows for interoperability of individual vehicles within open trains in international traffic. The data communication systems inside vehicles are given as recommended 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. IEC 61375-1 might be additionally applicable to closed trains and multiple unit trains when so agreed between purchaser and supplier. This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Extension of train backbone topologies: aggregated and segregated topology;
b) Added independent consist orientation check with segregated train backbone topology;
c) Introduction of wireless technologies: wireless train backbone and wireless consist network;
d) Possibility of virtual networks;
e) Definition of data classes and protocol requirements suitable for the OMTS domain;
f) New clause about cybersecurity in train communication networks.
SDO IEC: International Electrotechnical Commission
Document Number IEC 61375
Publication Date Not Available
Language en - English
Page Count
Revision Level 4.0
Supercedes
Committee 9
Publish Date Document Id Type View
Not Available IEC 61375-1 Ed. 4.0 en:2026 Revision
Not Available IEC 61375-1 Ed. 4.0 b:2026 Revision
June 21, 2012 Revision
June 21, 2012 IEC 61375-1 Ed. 3.0 b:2012 Revision