Sending a Signal to a Scada Unit

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  • #8558
    AvatarRich Ex
    Participant

    Hi Friends ,
    I’m sure this is a simple one but I can t get it working .

    On my Scada slave I have an address that is mapped to input channel 13 ( real ) in my Rapid Scada .
    I need to send a ‘1’ back to the Scada slave to reset the unit . Can anyone help please , I think I need an output channel but how does this map to the channel 13 , I have tried the Cmd function but this does not work .

    Eventually I want to link this to code I have written that sends the ‘1’ at 1 second past midnight , this bit works ok as I see the status change on the channel , its just not sending it back to the Scada slave .

    Thanks as always
    Rich

    #8560
    MikhailMikhail
    Moderator

    Hi,

    Do you use Modbus protocol?
    If yes, you should create a command in the Modbus template. Then check the command by sending commands from Communicator.
    Output channel is also needed. Please provide screenshots.

    #8564
    AvatarRich Ex
    Participant

    Mikhail ,

    Thanks it was my template as you suggested…. I had added the reset channel as a coil , but not under the ‘command’ tab . I have deleted this and added as a new command ‘1’ and now it works ..
    Thanks as always

    Rich

    #8565
    AvatarRich Ex
    Participant

    Hi Mikhail ,
    seems my automatic part does not work .
    I can send the command ok in Communicator .
    Here is my o/p channel

    image

    The formula I use to reset the unit at 56 seconds past midnight , I tested this on a dummy calculated channel and it works .

    I know modified it to work on the o/p channel and it compiles ok but does not sent the reset signal on the o/p channel
    image
    I think i did something wrong around the Cmd command , can you help please .

    Kind regards
    Rich

    #8566
    MikhailMikhail
    Moderator

    Hi,

    If you need to send commands automatically according to some conditions, Automatic Control Module would help you.

    #8570
    AvatarRich Ex
    Participant

    Hi Mikhail ,
    Is it not possible to send a signal from my formula then ?
    My time code works I just need know the command to send ‘1’ to the o/p address I spoke about .

    Thanks
    Rich

    #8572
    MikhailMikhail
    Moderator

    Hi,
    You can’t send a command from a formula. However, you can set input channel value from a formula.
    To send commands according to conditions, Automatic Control Module was created.

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