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IEC 62439-3

IEC 62439-3:2021
Industrial communication networks - High availability automation networks - Part 3: Parallel Redundancy Protocol (PRP) and High-availability Seamless Redundancy (HSR)
IEC 62439-3:2021 specifies two related redundancy protocols that, in the event of failure of any network element, provide seamless switchover with zero recovery time:
• PRP (Parallel Redundancy Protocol), which allows attaching nodes to two separate networks while allowing attachment of nodes to one network only; and
• HSR (High-availability Seamless Redundancy), which allows threading two-port nodes in a ring or multi-port nodes in a meshed network.
The contents of the corrigendum of April 2023 have been included in this copy.
BASE PUBLICATION
English/French
Electronic
  CHF 450.-

Technical committee

TC 65/SC 65C Industrial networks
Publication typeInternational Standard
Publication date2021-12-15
Edition4.0
ICS

25.040.40

35.100.05

Stability date2028
ISBN number9782832253212
EditionDatePublicationEditionStatus

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