EricCoplan (Customer) asked a question.

September 3, 2026 at 5:04 AM
Multiple Cmores turning off and on a pump using Do-more

I was wondering if anyone has an elegant solution to turning off and on a pump from three different Cmore touch screens using the push button function. 

 

Can I set up the push button as a toggle writing to C0 on all three Cmores? My understanding is that when using a Pushbutton toggle and the PUMP_ON is pressed on HMI_1, HMI_2 and HMI_3 will show pressed as well. 

 

So when PUMP_ON is pressed on HMI_1 it will write C0=1 to the PLC. This will be true until HMI_1, HMI_2 or HMI_3 writes a 0 to C0 by pressing the PUMP_ON push button again?

  • 4 answers
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  • ADC_HmiClicK_PE01 (AutomationDirect)

    "Can I set up the push button as a toggle writing to C0 on all three Cmores? My understanding is that when using a Pushbutton toggle and the PUMP_ON is pressed on HMI_1, HMI_2 and HMI_3 will show pressed as well."

     

    Yes, if you add a toggle button to each HMI, pressing it on any HMI will turn C0 on, and all 3 HMIs will show it is on. Then you can press the toggle button on any HMI and it will turn off the bit.

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  • ADC_HmiClicK_PE01 (AutomationDirect)

    "Can I set up the push button as a toggle writing to C0 on all three Cmores? My understanding is that when using a Pushbutton toggle and the PUMP_ON is pressed on HMI_1, HMI_2 and HMI_3 will show pressed as well."

     

    Yes, if you add a toggle button to each HMI, pressing it on any HMI will turn C0 on, and all 3 HMIs will show it is on. Then you can press the toggle button on any HMI and it will turn off the bit.

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  • RogerRR (Customer)

    A normal start or stop button can be used as well for C0 on multiple screens.

    The potential problem that I have seen once, is that if one HMI is damaged, the C0 may not change in the program even when the button on other screens is pressed.

    The work around is to have each screen with its own Cbit and parallel them in start contacts and series them in stop contacts.

    • EricCoplan (Customer)

      Roger, thank you for the reply. The current set up is that we have three CMOREs all using push button set to toggle that writes to Pump_1 P9.27_COMM_RUN_CMD. We are using Durapulse GS3 and gs-edvr100s. In this case the screens are writing right to the VFD through the GS-EDVR100.

       

      What happened was a pipe burst and sprayed water on the screen at the pump. The operators could not turn the pump off at the other two screens and it took a few minutes to turn the breakers off.

       

      My task is installing a physical OFF button that will shut the pump down if this ever happens again. I am going to have the screens communicate to a DO-More and have the physical OFF button as a permissive for the pump to run.

       

      """The work around is to have each screen with its own Cbit and parallel them in start contacts and series them in stop contacts ""

       

      Do you have the sample code of this? I would like to implement this as well. Thank you!

       

       

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      • ADC_HmiClicK_PE01 (AutomationDirect)

        It sounds like Roger is recommending something like this. If any of the HMIs enable a start bit, the pump will latch on until any of the HMIs enable a stop bit. In this setup all of the start buttons would be momentary.

        I do think you are on the right track installing a physical E-stop.

        multi cmore 

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