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    Question related to multiple Z endstop setup

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    Duet Hardware and wiring
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    • Ray11undefined
      Ray11
      last edited by

      I have a z_max endstop that is using a switch and a z_min endstop with a probe. Normally, I would use the z_max endstop for homing the printer. I am wondering if I first use the z_max endstop and home the printer, and then use G30 with the probe, what is the current z_axis referencing with? Is it the probe or the previous z_max endstop?

      duttiundefined 1 Reply Last reply Reply Quote 0
      • fcwiltundefined
        fcwilt
        last edited by

        I have a Z "min" endstop switch that I use for homing which gets me to within 10 mm or so of Z = 0.

        At that point I use G92 to set the actual position.

        When printing or mesh probing I first use the Z probe for establishing the current Z = 0 position.

        Frederick

        Printers: a E3D MS/TC setup and a RatRig Hybrid. Using Duet 3 hardware running 3.4.6

        1 Reply Last reply Reply Quote 1
        • aidarundefined
          aidar
          last edited by

          G30 is homing Z, just with probe, not endstop, so if you first home with Z max and then do G30, the last one, G30 result will be Z axis reference.

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          • duttiundefined
            dutti @Ray11
            last edited by

            @Ray11 hey
            Would you share your gcode?
            I have 4 a axis and at the moment I'm not able to create my own g.code.
            I'm still learning.
            Thanks

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            • KipKundefined
              KipK
              last edited by

              Home to zMin with your probe directly. Z max homing is only usefull for resume after failed print in your case.

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              • gorf26undefined
                gorf26
                last edited by

                Thanks i thing i got it figured out..

                Gary

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                • Phaedruxundefined
                  Phaedrux Moderator
                  last edited by

                  Here is an example of using a z min probe and z max endstop together.

                  https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+5:+Upgrades/54#s213

                  The probe fidns the bed and the z max can be used for power failure resume. There is even a macro that will help measure the exact distance of the zmax endstop and save it.

                  Z-Bot CoreXY Build | Thingiverse Profile

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