Services

This section contains information about the OPC Unified Architecture Services. The Services described are the collection of abstract Remote Procedure Calls (RPC) that are implemented by OPC Unified Architecture Servers and called by OPC Unified Architecture Clients. All interactions between OPC Unified Architecture Clients and Servers occur via these Services. The defined Services are considered abstract because no particular RPC mechanism for implementation is defined in this section. Section Mappings describes one or more concrete mappings supported for implementation. For example, one mapping in section Mappings is to XML Web Services. In that case the Services described in this Part appear as the Web service methods in the WSDL contract.

Not all OPC Unified Architecture Servers will need to implement all of the defined Services. Section Profiles describes the Profiles that dictate which Services need to be implemented in order be to compliant with a particular Profile.