Why OPC UA Matters: The Next Generation of OPC Protocol

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OPC Unified Architecture (UA) is a new communication technology standard which was first released by the OPC Foundation in 2006 as an improvement upon its predecessor, Classic OPC. OPC UA includes all of the functionality found in Classic OPC. This is done by bringing together the different specifications of Classic OPC into a single entry point to a system offering current data access, alarms and events, combined with the history of both.