1 Scope This part of IEC 62451 is part of the overall OPC Unified Architecture (OPC UA) standard series and defines the information model associated with Data Access (DA). It particularly includes additional VariableTypes and complementary descriptions of the NodeClass es and Attributes needed for Data Access, additional Properties, and other information and behaviour. The complete address space model, including all NodeClass es and Attributes is specified in IEC 62541‑3. The services to detect and access data are specified in IEC 62541‑4.

BS EN 62541-8:2015 PDF

Abstract

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