.

Also question is, how does OPC communication work?

The OPC server is a program that translates the hardware communication protocol used by a PLC into the OPC protocol. The OPC client software is a program that connects to the hardware, such as an HMI. The OPC client communicates with the OPC server to receive data or send commands to the hardware.

Also Know, what is the difference between OPC and OPC UA? The basic difference between OPC DA vs OPC UA is the version, in which the older version of OPC is DA, where it supports the older version of data modeling which is not as great as the data modeling provided by OPC UA.

Also Know, what is OPC server?

OPC = OLE for Process Control. OPC is a software interface standard that allows Windows programs to communicate with industrial hardware devices. OPC is implemented in server/client pairs. The OPC server is a software program that converts the hardware communication protocol used by a PLC into the OPC protocol.

Why is OPC needed?

An OPC server reduces the load on data source devices as it enables communication with several applications, while having only one connection with the data source. This reduces multi-access from the data source, and hence reduces the load on the data source.