BS EN IEC 62439-5:2018

This standard BS EN IEC 62439-5:2018 Industrial communication networks. High availability automation networks is classified in these ICS categories:

• 25.040 Industrial automation systems
• 35.100.05 Multilayer applications
• 35.040 Character sets and information coding
• 35.040.01 Information coding in general
• 25.040.40 Industrial process measurement and control
• 35.110 Networking

The IEC 62439 series 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 redundancy protocol that is based on the duplication of the network, the redundancy protocol being executed within the end nodes, as opposed to a redundancy protocol built in the switches. Fast error detection is provided by two beacon nodes, the switchover decision is taken in every node individually. The cross-network connection capability enables singly attached end nodes to be connected on either of the two networks.