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IEC 62439-3 Ed. 4.0 b:2021

Industrial communication networks - High availability automation networks - Part 3: Parallel Redundancy Protocol (PRP) and High-availability Seamless Redundancy (HSR)
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IEC 62439-3 Ed. 4.0 b:2021

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

PUBLISH DATE 2021
IEC 62439-3 Ed. 4.0 b: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;
  • HSR (High-availability Seamless Redundancy), which allows threading two-port nodes in a ring or multi-port nodes in a meshed network.
SDO IEC: International Electrotechnical Commission
Document Number IEC 62439
Publication Date Dec. 1, 2021
Language b - English & French
Page Count 498
Revision Level 4.0
Supercedes
Committee 65C
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