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  • IEC 62439-3:2021

    Current The latest, up-to-date edition.

    Industrial communication networks - High availability automation networks - Part 3: Parallel Redundancy Protocol (PRP) and High-availability Seamless Redundancy (HSR)

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English - French

    Published date:  15-12-2021

    Publisher:  International Electrotechnical Committee

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    Abstract - (Show below) - (Hide below)

    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.

    General Product Information - (Show below) - (Hide below)

    Committee TC 65/SC 65C
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Current
    Supersedes
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