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NEK EN IEC 62541-12:2026

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IEC 62541-12:2025 specifies how OPC Unified Architecture (OPC UA) Clients and Servers interact with DiscoveryServers when used in different scenarios. It specifies the requirements for the LocalDiscoveryServer, LocalDiscoveryServer-ME and GlobalDiscoveryServer. It also defines information models for Certificate management, KeyCredential management and AuthorizationServices.Annex A informatively discusses deployment and configuration aspects.Annex B defines NodeSet and numeric NodeIds.Annex F provides installation rules for the LDS.Annex H compares the Certificate management defined in this document with IETF RFC 7030.This second edition cancels and replaces the first edition published in 2020. This edition constitutes a technical revision.This edition includes the following significant technical changes with respect to the previous edition:a) addition of a "Quantity Model" which can be referenced from EngineeringUnit Properties. The model defines quantities and assigned units. In addition it provides alternative units and the conversion to them;b) addition of rules for ValuePrecision Property:• can also be used for other subtypes like Duration and Decimal.• additional rules when ValuePrecision has negative values.

Dokumentinformasjon

  • Standard fra NEK
  • Publisert:
  • Utgave: 2026-02
  • Versjon: 1
  • Varetype: NAT
  • ICS 25.040.40
  • National Committee NEK/NK65

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