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    How to let steppers move when reaching axis zero

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    • jcsb1994undefined
      jcsb1994
      last edited by

      Hi,
      I want to ignore the 0.00 position on a given axis and keep going in the negative direction
      3423ff39-2def-49f1-939e-bdb6697ecb02-image.png
      As of now, if I press controls to move the axis when they are at 0, they do not move
      9399511e-0420-4f47-b0cb-80668e0a378a-image.png
      I have added this command in my config.g file
      M564 H0
      As I thought it would solve this issue. Any idea? Thanks!

      deckingmanundefined 1 Reply Last reply Reply Quote 0
      • deckingmanundefined
        deckingman @jcsb1994
        last edited by

        @jcsb1994 Once the printer has been homed, the firmware will respect the axis limits and not allow moves beyond them. The reason is that normally those axis limits are also physical limits so respecting them will prevent mechanical collisions.

        To move more negative than zero, you therefore need to define the axis minimum as a negative value using M208 S1 https://duet3d.dozuki.com/Wiki/Gcode#Section_M208_Set_axis_max_travel

        Ian
        https://somei3deas.wordpress.com/
        https://www.youtube.com/@deckingman

        1 Reply Last reply Reply Quote 2
        • fcwiltundefined
          fcwilt
          last edited by Phaedrux

          (M564)

          The H parameter controls movement when homed/not homed.

          The S parameter controls movement within/without min/max limits.

          Frederick

          Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

          deckingmanundefined 1 Reply Last reply Reply Quote 1
          • deckingmanundefined
            deckingman @fcwilt
            last edited by

            @fcwilt That would work too ☺

            Ian
            https://somei3deas.wordpress.com/
            https://www.youtube.com/@deckingman

            1 Reply Last reply Reply Quote 0
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