OPC UA.

OPCUA is an interoperability standard for the industry. That is to say that it is not only a communication protocol for industrial devices, but also is able to exchange meta-data with those devices.

OPC UA is the standard for interoperability, IoT, Industry4.0 and M2M promoted by companies like Microsoft, SAP, Oracle, HP, ABB, National Instruments, Yokogawa, GE, Bosch, Thijssen-Krupp, Schneider Electric, not to mention Siemens.

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