The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

IEC 61508 (all parts), Functional safety of electrical/electronic/programmable electronic safety-related systems

IEC 617843:2021, Industrial communication networks – Profiles – Part 3: Functional safety fieldbuses – General rules and profile definitions

IEC 62443 (all parts), Industrial communication networks – Network and system security

OPC 10000-1, OPC Unified Architecture – Part 1: Overview and Concepts

OPC 10000-3, OPC Unified Architecture – Part 3: Address Space Model

OPC 10000-4, OPC Unified Architecture – Part 4: Services

OPC 10000-5, OPC Unified Architecture – Part 5: Information Model

OPC 10000-6, OPC Unified Architecture – Part 6: Mappings

OPC 10000-14, OPC Unified Architecture – Part 14: PubSub

ISO/IEC 9834-8:2014, Information technology – Procedures for the operation of object identifier registration authorities – Part 8: Generation of universally unique identifiers (UUIDs) and their use in object identifiers