OPC unified architecture - Part 1: Overview and concepts
OPC Unified Architecture - Part 1: Overview and Concepts
IEC TR 62541-1:2020 is available as IEC TR 62541-1:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 62541-1:2020 presents the concepts and overview of the OPC Unified Architecture (OPC UA). Reading this document is helpful to understand the remaining parts of this multi-part document set.
Each of the other parts of IEC 62451 is briefly explained along with a suggested reading order.
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Version 1 - 2026-06-22
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