All value reset to 0 when device lost communication

Forum Home › Forums › Communicating with Devices › Modbus › All value reset to 0 when device lost communication

Tagged: 

Viewing 4 posts - 1 through 4 (of 4 total)
  • Author
    Posts
  • May 27, 2019 at 2:05 am #5481
    gasin
    Participant

    i’ve problem about value from modbus reset to 0 when device lost communication.

    Is it possible to hold last value before lost communication?

    May 27, 2019 at 6:13 am #5483
    Mikhail
    Moderator

    The answer is here https://forum.rapidscada.org/?topic=retain-variable

    July 2, 2019 at 11:01 am #5652
    gasin
    Participant

    Hi,

    i try to use this formula : Cnl > 0 ? Cnl : Val()

    but the result is when i write to 0, input still show 1. and device connect normally.

    July 3, 2019 at 7:39 am #5658
    Mikhail
    Moderator

    Hi,

    Stop the Communicator service, and use the Generator feature the collect more information how the formula works. The expected and actual results, you need, are not clear.

  • Author
    Posts
Viewing 4 posts - 1 through 4 (of 4 total)
  • You must be logged in to reply to this topic.