Summary
In this chapter, we learned how to implement the IIoT data flow in a complex industrial plant. We started by looking at OPC, including what it is, how it has evolved, and how it works in both its implementations—OPC Classic and OPC UA. We explored how it connects to data sources to expose their data through common interfaces, following a common data model. We then went into detail about the edge, analyzing its features, internal components, architecture, interfaces, and current implementation.
After that, we started our journey on the IIoT data flow. We looked at how to select a data source to connect to in order to gather data. We explored controllers, such as the PLC or the DCS, a SCADA system, and a Historian system. Each of these options has its own advantages and disadvantages; no one is better than the others. The choice must be made depending on the capabilities and constraints that exist in our plant and the requirements of our specific use case.
We then...
