7 Safety communication layer services and management ToC Previous Next

7.2 OPC UA Platform interface (OPC UA PI) ToC Previous Next

The state machines of OPC UA Safety are independent from the actual OPC UA services used for data transmission. This is accomplished by introducing a so-called OPC UA Mapper, serving as an interface between the safety communication layer and the OPC UA stack.

The mapper can either make use of OPC UA Client/Server and remote method invocation or the publishing of and subscribing to remote variables as defined in OPC 10000-14. The requirements on the implementation of the mapper are implicitly given in Clause 6 (OPC UA Information Model).

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