November 2018
Intermediate to advanced
556 pages
14h 42m
English
Content preview from Hands-On Industrial Internet of Things
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Edge on OPC DCOM
In this scenario, the edge is not directly connected to the data source but to its OPC Classic server through an OPC Classic client:
Edge on OPC DCOM
This means that the edge must implement and incorporate the OPC Classic client interface. The data source could be one of those mentioned previously—a PLC, a DCS, a SCADA system, or a Historian. The OPC abstracts the data source, which is why, in the preceding diagram, the OPC server has a dotted link with each of the potential data sources. Obviously, the OPC server must be specific to a particular data source, but, from the perspective of the client and the edge, this does ...