Unitronics as TCP client - how to handle server's response?

[Natan]

Hello,

I have a Python code which does some algorithmic job, and acts as a TCP server on a PC.

The Unitronics PLC I have is the client, and the workflow goes as follows:

Request -- UNI -> PC: "Please check this XYZ"

Response -- PC -> UNI: "Ok / Fail"

Now, in the "normal world" the response from the PC (the server) is bound to the same TCP request from the client (as in HTTP protocol, if you're familiar).  Can I do that with PLC as well?

Because I don't want to open another socket where the PLC is the server (and the PC will respond to there). I'm afraid it will be out of sync.

 

Any solution? Maybe an example?

 

Cheers,

Natan