IEC 62541-3:2020 PRV 
Pre release version

OPC Unified Architecture - Part 3: Address Space Model

English/French
CHF 

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Abstract

This Final Draft International Standard is an up to 6 weeks' pre-release of the official publication. It is available for sale during its voting period: 2020-05-01 to 2020-06-12. By purchasing this FDIS now, you will automatically receive, in addition, the final publication.
IEC 62541-3:2020 defines the OPC Unified Architecture (OPC UA) AddressSpace and its Objects. This document is the OPC UA meta model on which OPC UA information models are based.
This third edition cancels and replaces the second edition published in 2015.
This edition includes the following significant technical changes with respect to the previous edition:
a) Added new improved approach for exposing structure definitions. An Attribute on the DataType Node now simply contains a binary description.
b) Added new flags for Variables to indicate atomicity when reading or writing.
c) Added Roles and Permissions to allow configuration of a role-based authorization.
d) Added new data types: “Union”, “Decimal”, “OptionSet”, “DateString”, “TimeString”, “DurationString”, NormalizedString”, “DecimalString”, and “AudioDataType”.
e) Added definition on how to use the ModellingRules OptionalPlaceHolder and MandatoryPlaceHolder for Methods.
f) Added optional Properties “MaxCharacters” and “MaxByteStringLength” to Variable Nodes.

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Additional information

Publication typeInternational Standard
Publication date2020-05-01
Edition3.0
Available language(s)English/French
TC/SCTC 65/SC 65E - Devices and integration in enterprise systemsrss
ICS25.040.40 - Industrial process measurement and control
35.100.05 - Multilayer applications
Stability date  2023
Pages252
File size7226 KB

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