OPC = OLE for Process Control. An industrial standard for HMI/SCADA screen objects to communicate/access with other software. OPC has become a real workhorse replacing custom HMI drivers and connecting controls & automaton to the business enterprise. There are currently seven standards specifications completed or in development by OPC Foundation. OLE = Object Linking and Embedding. Imagine your HMI or SCADA screen, it is made up many objects. Objects can be picture of pump, gauges, labels, etc. The whole screen with all the objects is the COM(Component Object Model), on your phone DCOM. The screen objects are link to or embedded with each other via Microsoft's OLE standard, and linked to other software via the OPC standard. Some applications may involve XML too.
Who should take this OPC training? Process Control Engineers, Application Engineers, Analyzer Technicians, DCS technicians, SCADA engineers, Instrument Engineers, Industrial Engineers, and Supervisors. All Industrial IoT (IIoT) platforms should support OPC Classic and OPC UA, along with common industrial fieldbus like Modbus, Profibus, HART, DeviceNet, and so on. So this OPC training course should be required for those working with and implementing IIoT too.