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    Manual Levelling Error: Number of calibration factors

    Tuning and tweaking
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    • DekJak
      DekJak last edited by

      Hi All,
      I’m trying to do a manual bed level for the first time and I’m running into the error:-
      Error: Number of calibration factors (3) not equal to number of leadscrews (4)
      I'm starting the levelling command with G32

      The M671 command in my Config.g is:-
      M671 X41:327:327:27 Y-35:-35:425:425 P0.5
      For adjusting screws starting near the origin and working anti-clockwise round the bed at :-
      X Y
      41 -35
      327 -35
      327 425
      27 425
      The four points are probed without any visible error.
      Can anyone see what I'm doing wrong please?

      My Bed.g is:-
      G28 ; home
      G29 S2 ; Clear height map
      M561 ; Clear Mesh Levelling
      G1 X10 Y10 F5000 ; Make sure the probe is clear
      M401 ; deploy Z probe
      G30 P0 X0 Y0 Z-99999 ; Dummy probe point
      G30 P0 X41 Y0 Z-99999 ; probe near P0
      G30 P1 X310 Y0 Z-99999 ; probe near P1
      G30 P2 X310 Y390 Z-99999 ; probe near p2
      G30 P3 X27 Y390 Z-99999 S3 ; probe near p3 and report adjustments needed
      M402 ; retract probe
      G1 X0 Y0 F5000 ; back to origin

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      • DekJak
        DekJak last edited by

        Sorry, should have said that this is a CoreXY printer running firmware 2.02(RTOS) (2018-12-24b1)

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        • DekJak
          DekJak last edited by

          OK, I got it.

          The final S parameter should be S-1.
          I was just following the example in the "Using the manual bed levelling assistant " which shows S3 and not the Gcode manual which shows S-1.

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          • dc42
            dc42 administrators last edited by

            No, if you have 4 independent leadscrews then the S parameter on the final G30 command should be S4.

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