IEC 62439-2:2021/COR1:2023

IEC 62439-2:2021/COR1:2023 is a corrigendum to IEC 62439-2:2021, addressing Industrial communication networks - High availability automation networks - Part 2: Media Redundancy Protocol (MRP). It is relevant where engineering teams, testers, and compliance staff need to work from the corrected technical wording when reviewing redundancy behavior in automation networks. As a supporting document linked to the parent publication, it helps ensure documented evaluation, technical validation, and procurement review are based on the intended text.

Overview of IEC 62439-2:2021/COR1:2023

This corrigendum is intended to modify or clarify the parent document for Media Redundancy Protocol in high-availability automation networks. In practical terms, IEC 62439-2:2021/COR1:2023 is used alongside the base publication when teams are performing technical assessment, verifying network behavior, or maintaining engineering documentation for systems that depend on redundancy and operational consistency. It supports a more reliable reading of the specification during design review, conformity assessment, and internal quality workflows.

Compliance applications of IEC 62439-2:2021/COR1:2023

Organizations may use this corrigendum during product evaluation, laboratory evaluation, and compliance workflows for industrial communication equipment that implements MRP-based redundancy. It is particularly relevant when comparing supplier documentation, checking test plans, or preparing conformity assessment evidence for automation systems where communication continuity matters. Because it is connected to the parent reference, it is most useful as a controlled technical document for teams that need to align verification activities with the corrected text before procurement or release decisions.

Importance of compliance with IEC 62439-2:2021/COR1:2023

Using the corrected reference helps reduce interpretation errors in engineering validation and improves consistency across technical review and testing workflows. For projects involving resilient industrial networks, accurate reference material supports risk management, clearer procurement decisions, and more dependable compliance preparation. It can also help laboratories and manufacturers maintain traceable documentation when assessing whether an implementation matches the intended redundancy behavior defined in the parent publication.

• Supporting corrigendum for the parent MRP document, not a standalone technical specification
• Relevant for review of redundancy behavior in high-availability automation networks
• Useful in engineering documentation, test planning, and conformity assessment workflows
• Helps maintain alignment between technical evaluation and the corrected source text