#167 Network Variables communication protocol is needed

closed
None
2025-11-04
2022-05-10
allyprimo
No

Hello,
We are developing an embedded application to communicate with a PLC. The plan is to use CodeSys UDP communication. I mean, using "Network Variables".
As far as I know, the communication protocol is called as "3S protocol". Does anybody have the details of the protocol ?
Thanks in advance

Discussion

  • Ingo

    Ingo - 2022-05-11

    Hi @allprimo, and welcome.
    Unfortunately you hit the wrong place. You may ask this question in CODESYS Talk

     
  • Ingo

    Ingo - 2022-05-11
    • labels: Network Variables, 3S Protocol -->
    • status: open --> closed
     
  • michaelhepiroc - 2025-11-04

    Hi @allprimo,
    This is an old post, however, did you get anywhere with this? I was starting a program in C# to read NVLs, it was more so for troubleshooting. It is basic ATM.
    Mike.

     

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