| Description |
Summary
This specification extends OPC UA to fulfill the requirements of functional safety as defined in the IEC 61508 and IEC 61784-3 series of standards.
Evaluated against IEC 61784-3 by TÜV Süd.
Key Features
- uses either OPC UA Client/Server or OPC UA PubSub (with or without TSN)
- unidirectional, bidirectional, and multicast communication patterns
- arbitrary structured user data, length: 1-1500 bytes
- arbitrary network-topology: line, tree, star, ring, mesh, …
- dynamic establishment of safe connections during runtime
- no requirements on regular (i.e. non-safe) network participants
- no need for synchronized clocks
- unlimited number of network components and terminals
- unlimited data rate
Milestones
- February 2018:
Kick-Off Meeting of “PROFIsafe over OPC UA”, a joint working group between OPC Foundation and Profibus & Profinet International
- April 2019:
The FLC (Field-Level Communications) Initiative of the OPC Foundation decides to make of it for the safe exchange of data, and the working group is moved into that initiative
- July 2019:
The specification is renamed “OPC UA Part 15: Safety” and becomes part of the OPC core set of specifications
More Information
- OPC UA Safety Technical Paper Link
- OPC UA Safety Introduction Link
- OPC UA Safety Stack Link
- OPC UA Safety Test Tool Link
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