Canmorebrewguy (Customer) asked a question.

Edited March 1, 2021 at 10:37 PM
Is there a way to enable and disable a PID loop with a bit from the HMI on a Click Plus PLC?

Hello,

I am very new to plc and I am trying to build a brewery control. I would like to be able to enable and disable the PID loop during different states of the brew process. The only way I can maybe see it working is to use a rung to toggle between manual and auto control and put the output at 0.

 

Anyone have any other Ideas?

 

Cheers,

Todd

  • 5 answers
  • 1.14K views

  • RBPLC (Customer)

    What you're suggesting is a pretty common way to do it. Use a NO contact to run the PID loop with the NC moving zero to the PID output.

    • Canmorebrewguy (Customer)

      Thank you for your answer, I am a little unclear on what part of the PID loop I would control with the NO contact. The control output for the PID I assume would have to go to 0 and I am not sure how to write that. Sorry if these are basic questions i am about 3 days deep into watching videos and learning!

       

      • RBPLC (Customer)

        I don't use the Click much, but something like this is what I had in mind. There are many other ways to do it as well.

        • ClickExample

 

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