PLC data communication with a remote server

Question

How can I interact with a PLC to send and receive data to/from a remote server(PC).

For example a robot that have a PLC and want to interact with a server that placed at near room with a wireless communication.

Data must move all over the time. PLC sending the data to the server and server must sending back the result of computation on the data to PLC.

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review : My PLC brand is Delta but its model has not been selected yet .

Answer 1

A common scenario is that the manufacturer provides an OPC server for the PLC. You should check their website once you know the model. Then it is just a matter for you to create an OPC client.

A good way to start is to get a free OPC server simulator like the one from Matrikon. It doesn't need any hardware. OPC is a standard interface (although there are often some minor variations between manufacturers) - if you can get your client to work with the test server you can probably get it to work with the PLC.