EN 62439-1:2010/A2:2017

Industrial communication networks - High availability automation networks - Part 1: General concepts and calculation methods EN 62439-1:2010/A2:2017

Publication date:   Dec 14, 2017

General information

60.60 Standard published   Nov 10, 2017


CLC/TC 65X Industrial-process measurement, control and automation

European Norm

25.040   Industrial automation systems | 35.040   Information coding



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IEC 62439-2:2016 is applicable to high-availability automation networks based on the ISO/IEC/IEEE 8802-3 (IEEE 802.3) (Ethernet) technology. This part of the IEC 62439 series specifies a recovery protocol based on a ring topology, designed to react deterministically on a single failure of an inter-switch link or switch in the network, under the control of a dedicated media redundancy manager node.This second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:

- adding a protocol extension to select the media redundancy manager automatically;

- adding a protocol to redundantly connect media redundancy protocol rings.

This publication is to be read in conjunction with <a href='https://webstore.iec.ch/publication/24248'>IEC 62439-1:2010.

Life cycle


EN 62439-1:2010


EN 62439-1:2010/A2:2017
60.60 Standard published
Nov 10, 2017