IEC 61375-2-3:2015 PDF

Electronic railway equipment - Train communication network (TCN) - Part 2-3: TCN communication profile

First page of standard IEC 61375-2-3:2015

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Title (English):

IEC 61375-2-3:2015

Electronic railway equipment - Train communication network (TCN) - Part 2-3: TCN communication profile

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 275
Publication date:: July 16, 2015
Edition:: IEC IS 61375 edition 1 version 1
ICS:: 45.060.01

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Description (English):

IEC 61375-2-3:2015 specifies rules for the data exchange between consists in trains. The aggregation of these rules defines the TCN communication profile. The objective of the communication profile is to ensure interoperability between consists of the said trains with respect to the exchange of information. For this purpose it defines all items which are necessary for communication interoperability: - an architecture with defined train directions related to different train views; - a common functional addressing concept; - common communication protocol for data exchange between functions; - a set of services for train communication control. The contents of the corrigendum of December 2015 and October 2016 have been included in this copy.

Technical details

Technical committee: TC 9 - Electrical equipment and systems for railways
SKU: IEC 61375-2-3:2015

Abstract

Overview

IEC 61375-2-3:2015 - Electronic railway equipment - Train communication network (TCN) - Part 2-3: TCN communication profile specifies the rules and profile for data exchange between consists in trains. Its purpose is to guarantee interoperability between consists by defining the architecture, addressing concepts, communication protocols and control services required for consistent on‑train communication. This edition incorporates the corrigenda of December 2015 and October 2016.

Key topics and technical requirements

The standard defines a comprehensive TCN communication profile focusing on practical interoperability building blocks:

Architecture
- Physical and logical train architectures, including defined train directions, views and consist/vehicle properties.
- Support for closed trains and multiple ETBs (Ethernet Train Backbone) options.
Addressing & Discovery
- Common functional addressing concept and the TCN Domain Name System (TCN‑DNS).
- TCN‑URI scheme and mapping to IP addresses for service resolution.
Communication protocols
- Common protocol for data exchange between functions, including the Train Real‑Time Data Protocol (TRDP) (Annex A) for process and message data.
- Quality of Service (QoS) considerations and operational/OMTS network distinctions.
Services for train communication control
- ETB Control Service (ETBCTRL), CSTINFO telegrams for consist information exchange and notification, and Train Topology Database (TTDB) computation and structures.
- Service discovery, Train Info Service and functions such as Leading, Confirmation/Correction and Sleep Mode (optional).
Safety & reliability
- Safe Data Transmission (SDTv2) (Annex B) with safety functional requirements and operational states for vital data exchange.
- Mechanisms for exclusivity, topography checks and operational train directory computation.

Practical applications and who uses it

IEC 61375-2-3 is applied where interoperable on‑train communication is required across multi‑consist trains and distributed vehicle functions:

Rolling stock manufacturers specifying on‑board networks and ETB implementations
Railway system integrators and vehicle control suppliers implementing consistent addressing and service discovery
Communication and signalling engineers designing TCN-based diagnostics, control, passenger information and distributed function exchange
Test labs and certification bodies validating interoperability between consists and vendor equipment

Keywords: IEC 61375-2-3, TCN communication profile, Train communication network, TRDP, SDTv2, Train Topology Database, TCN‑DNS, ETB control, CSTINFO, interoperability.

Related standards & documents

Other parts of the IEC 61375 series (TCN family)
Annex A (TRDP) and Annex B (SDTv2) inside IEC 61375‑2‑3:2015 (normative) for protocol and safety transmission specifics.

Related standards

Mentioned in the description and other IEC standards

Abstract

Overview

Key topics and technical requirements

The standard defines a comprehensive TCN communication profile focusing on practical interoperability building blocks:

Architecture
- Physical and logical train architectures, including defined train directions, views and consist/vehicle properties.
- Support for closed trains and multiple ETBs (Ethernet Train Backbone) options.
Addressing & Discovery
- Common functional addressing concept and the TCN Domain Name System (TCN‑DNS).
- TCN‑URI scheme and mapping to IP addresses for service resolution.
Communication protocols
- Common protocol for data exchange between functions, including the Train Real‑Time Data Protocol (TRDP) (Annex A) for process and message data.
- Quality of Service (QoS) considerations and operational/OMTS network distinctions.
Services for train communication control
- ETB Control Service (ETBCTRL), CSTINFO telegrams for consist information exchange and notification, and Train Topology Database (TTDB) computation and structures.
- Service discovery, Train Info Service and functions such as Leading, Confirmation/Correction and Sleep Mode (optional).
Safety & reliability
- Safe Data Transmission (SDTv2) (Annex B) with safety functional requirements and operational states for vital data exchange.
- Mechanisms for exclusivity, topography checks and operational train directory computation.

Practical applications and who uses it

IEC 61375-2-3 is applied where interoperable on‑train communication is required across multi‑consist trains and distributed vehicle functions:

Rolling stock manufacturers specifying on‑board networks and ETB implementations
Railway system integrators and vehicle control suppliers implementing consistent addressing and service discovery
Communication and signalling engineers designing TCN-based diagnostics, control, passenger information and distributed function exchange
Test labs and certification bodies validating interoperability between consists and vendor equipment

Keywords: IEC 61375-2-3, TCN communication profile, Train communication network, TRDP, SDTv2, Train Topology Database, TCN‑DNS, ETB control, CSTINFO, interoperability.

Related standards & documents

Other parts of the IEC 61375 series (TCN family)
Annex A (TRDP) and Annex B (SDTv2) inside IEC 61375‑2‑3:2015 (normative) for protocol and safety transmission specifics.

IEC 61375-2-3:2015 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Practical applications and who uses it

Related standards & documents

Related standards

Abstract

Overview

Key topics and technical requirements

Practical applications and who uses it

Related standards & documents

Related standards

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