What does OPC stand for? OPC = OLE for Process Control
What does OLE stand for? OLE=Object Linking and Embedding
OPC communication protocol is the most current to standardize data transfer between all industrial devices. Which make OPC training essential to those working with IIoT.
(IIoT=Industrial Internet of Things)
For OPC SCADA and DCS, this OPC training and software gives you real world experience on free OPC server.
Source: OPC for SCADA and DCS training
Below is a link to a great whitepaper about the learning path for PLC network Communication to PC (HMI SCADA), to the Smartphone (cloud). More accurately PLC to OPC/SQL to Smartphone App or HTML5. Includes network security advice for the stages alogn the way too. Start with PLC network and communication protocols and methods, then expand to HMI-SCADA, to SQL (and brand specific topics like RSLinx OPC server), Excel OPC client, HTML5 and your ready for Smartphone.