Unified Architecture

Part 3: Address Space Model Title: Part 3: Address Space Model Description:

This specification provides a detailed description of an address space within an OPC UA Server, for OPC UA Clients to consume, covering:


  • The concepts of an address space, Node and Views
  • Detailed description of Nodes and References and how they are used to logically organize the address space
  • Detailed descriptions of node types, reference types, data-types, event types, and how they can be used for information modelling

License: OPC Specifications Agreement of Use


OPC Foundation membership fees are used by the OPC Foundation for the continuous improvement of this specification, which includes bug-fixes and adding new features as required by the continuous advancement of the OPC Specifications.


Found a bug? Please report any bugs to our Mantis system. Click the "Tracking" tab for a list of current work items. We welcome your bug-fixes and kindly ask you to submit them via Mantis.


Have a Suggestion / Request for enhancement / New Features? Please Join an OPC Foundation Member Working Group (details may be found here). You may also submit requests to the OPC Foundation email address of. All suggestions become the property of the OPC Foundation.


Activities including bug-fixes and feature requests as reported in our Mantis bug-tracking system as described here.



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Version Status Description Date Posted
1.04 Release OPC 10000-3 - Part 3: Address Space Model (ZIP/PDF) 2017-11-22 Icon
Version Status Description Date Posted
1.04.16 Release Candidate 2017-07-18 Icon
1.04.10 Release Candidate ZIP/DOCX 2017-02-09 Icon
1.03.09 Release Candidate ZIP/DOCX (30-day review) 2015-03-18 Icon
1.03 Release ZIP/PDF 2015-07-20 Icon
1.02.19 Release Candidate Icon
1.02 Release Specification 2012-07-10 Icon
1.01.13 Release Candidate Icon
1.01 Release Icon
1.00 Release Icon