OPC UA Companion Specification
MTConnect-OPC UA is a set of companion specifications to ensure interoperability and consistency between MTConnect specifications and the OPC Unified Architecture (UA) specifications, as well as the manufacturing technology equipment, devices, software or other products that implement those standards.
Version 1.02 Release Candidate (November 2013)
Version 1.00 Final (November 2012)
What is OPC UA?
The OPC Unified Architecture (UA) is a platform independent service-oriented architecture.
The OPC UA information modeling framework is extended by the MTConnect Institute and many other organizations. MTConnect's industry standard information model fits between vendor information models and the OPC UA base (information access, transport, discovery, security, robustness)