Matrikon, an OPC Foundation Charter Member, has produced a 30-minute online multimedia tutorial to explain the basics and vision of OPC and how to begin integrating it into new and current systems.

Data value changes An OPC UA node is exposing a value reflecting a measurement of a sensor. If the value of the sensor changes, the OPC UA node value changes. This tutorial refers to it as data value ...

The master branch only contains the *Model.xml files, not the compiled NodeSet2.xml files. On every push to a branch, an is executed and the resulting model files are pushed back to the branch 'master ...