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    Disabling and enabling axes in tandem

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    • anaghundefined
      anagh
      last edited by

      I have a Duet 3. I want to implement a system where there is a chance two axes might collide with each other. So I want to find a way to prevent that.
      I have two axes (lets say axis A and axis B). I want axis B to move only when a limit switch is pressed by axis A (this would indicate axis A is in a safe position for B to move). When the limit switch is not pressed by axis A, B should not move or remain disabled. What would be the best way to implement this? Any suggestions will be helpful. Thank you!

      anaghundefined 1 Reply Last reply Reply Quote 0
      • Phaedruxundefined Phaedrux moved this topic from Using Duet Controllers
      • anaghundefined
        anagh @anagh
        last edited by

        Right now, I am just disabling the axes with M18 to achieve what I mentioned in the question. But weirdly, when one of the axes is disabled (or not homed), the puase.g and resume.g programs are not being run when I press the pause or resume button on the DWC window. When I home both axes (which defeats the purpose of what I am trying to do), the pause.g and resume.g programs are run as needed.
        @Phaedrux @dc42
        Any help with this? I have seen other people face similar problem in other discussions.

        dc42undefined 1 Reply Last reply Reply Quote 0
        • dc42undefined
          dc42 administrators @anagh
          last edited by

          @anagh the 3.5 development branch of RRF includes an anti-collision feature. See https://docs.duet3d.com/en/User_manual/Reference/Gcodes#m597-collision-avoidance. Would this meet your requirements?

          Duet WiFi hardware designer and firmware engineer
          Please do not ask me for Duet support via PM or email, use the forum
          http://www.escher3d.com, https://miscsolutions.wordpress.com

          anaghundefined 2 Replies Last reply Reply Quote 0
          • anaghundefined
            anagh @dc42
            last edited by

            @dc42 Unfortunately, this will not be useful for what I want to do. Both the axes I have are rotary axes. They rotate between 0 and 360 deg. If axis A is not being used (it will be in 0 deg position) and B will move between 0 and 360 deg. As long as A remains in 0 deg position, it is safe for B to move its full range of motion. Same for the vice-versa case.
            This is the type of configuration I have.

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            • anaghundefined
              anagh @dc42
              last edited by

              @dc42 any suggestions on how to get around the problem of pause.g and resume.g not being executed when one axis is disabled?

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