Todd Dice (Customer) asked a question.

Drum Instruction Jog function

The jog function on the drum I have is not working. The steps do have a ms time base and the steps include an event with the time. I press the jog and I can see the steps, but the outputs are failing to work.


  • ADC_PLC_ENG (AutomationDirect)

    Can you share with us how you have it setup?

    Also when you jog do you have the "enable" for the instruction turned on?

    • Todd Dice (Customer)

      No, because when its enabled. it runs automatically. If enable is required, I'm completely confused on how to have it not run and allow Jog.

       

      I see in the help file a NO contact Automatic in enable and NO contact in Manual. What I have in their place is an Auto/Hand selector switch from a Cmore (Auto is the Off position, Hand is On). So, the logic that triggers enable is through the NC when in Auto. That contact changes when in Hand, and a NO contact in series with the Jog pushbutton in the Cmore. I'm assuming from the example when in Manual, the Automatic contact opens.Jog example

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  • ADC_PLC_ENG (AutomationDirect)

    Outputs are not updated if the Enable is off. The jog will advance to the next step and if you then enable that steps output would activate. So you could take it out of auto advance to the step you wish to run and then activate, but sounds like you wish to manually step through your steps. In that case you may need a manual drum instruction and an automatic drum instruction.

     

    Drum

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    • Todd Dice (Customer)

      That won't work for me as I wish to work from and edit just one drum. What I did find to work was add a branch to the enable rung made up of the same contacts as those in the jog rung. Thanks.