This specification defines the OPC Unified Architecture (OPC UA) PubSub communication model. The PubSub communication model defines an OPC UA publish subscribe pattern instead of the client server pattern defined by the Services in Part 4.
The specification consists of:
- a general introduction of the concepts,
- a definition of the PubSub communication parameters,
- a PubSub configuration information model,
- and mappings to messages and protocols