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    Setting Z Offset

    Third-party add-ons
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    • Weevil
      Weevil last edited by

      I am using the Duet 3 board (Firmware 3.0). I am trying to save my Z offset as 1.7 using the code M851 Z1.7. However, when I check with M503 I get this:
      G31 P500 X-38 Y0 Z2.044 ; set Z probe trigger value, offset and trigger height. It will not update. Please advise. Thanks.

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      • Phaedrux
        Phaedrux Moderator last edited by

        https://duet3d.dozuki.com/Wiki/Gcode#Section_M851_Set_Z_Probe_Offset_Marlin_Compatibility

        Did you note the sign reversal?

        Does G31 Z work properly otherwise?

        Z-Bot CoreXY Build | Thingiverse Profile

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        • Weevil
          Weevil @Phaedrux last edited by

          @Phaedrux I tried the sign reversal. I edited the file in the web control and even updated the config file and uploaded. Yet, M503 command shows no update.

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          • Phaedrux
            Phaedrux Moderator @Weevil last edited by

            @Weevil said in Setting Z Offset:

            Yet, M503 command shows no update.

            As it shouldn't. M503 reads back the config.g.

            https://duet3d.dozuki.com/Wiki/Gcode#Section_M503_Print_settings

            If you want to reload the config-override.g that's M501.

            You'd then have to check the current G31 by sending... G31 with no parameters.

            Z-Bot CoreXY Build | Thingiverse Profile

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            • Weevil
              Weevil @Phaedrux last edited by

              @Phaedrux I tried it one more time and it works, sort of. Using a z offset of -1.70 it stops quite a ways from the head. I will have to re-calibrate.

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