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IEC 62541-8-ed.3.0-RLV

OPC Unified Architecture - Part 8: Data Access

STANDARD published on 22.6.2020

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The information about the standard:

Designation standards: IEC 62541-8-ed.3.0-RLV
Publication date standards: 22.6.2020
The number of pages: 153
Approximate weight : 490 g (1.08 lbs)
Country: International technical standard
Category: Technical standards IEC

Annotation of standard text IEC 62541-8-ed.3.0-RLV :

IEC 62541-8:2020 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.

IEC 62541-8:2020 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 NodeClasses and Attributes needed for Data Access, additional Properties, and other information and behaviour. The complete address space model, including all NodeClasses and Attributes is specified in IEC 62541-3. The services to detect and access data are specified in IEC 62541-4. This third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) added new VariableTypes for AnalogItems; b) added an Annex that specifies a recommended mapping of OPC UA Dataccess to OPC COM DataAccess; c) changed the ambiguous description of "Bad_NotConnected"; d) updated description for EUInformation to refer to latest revision of UNCEFACT units.