Open Platform Communication Unified Architecture (UPC-UA)

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OPC Unified Architecture (UPC-UA) is an information exchange standard for Industrial Automation and related systems created by the OPC Foundation. The Open Platform Communication UA standard provides an Addressing and Information Model for Data Access, Alarms, and Service invocation layered over multiple transport-level protocols such as Binary Transmission Control Protocol (TCP) and Web-Services.

Source: OMG: OPC-UA/DDS Gateway (DDS-OPCUA)