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    Help - Trigger height Bed go down before print

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    • esobreiroundefined
      esobreiro
      last edited by

      Hello,

      Despite the use of M564 S0 (https://duet3d.dozuki.com/Wiki/Using_mesh_bed_compensation) my print (final stages of finishing) is lowereing the bed before start print.

      What could be wrong?

      ; Drives
      M569 P0 S1 ; physical drive 0 goes forwards
      M569 P1 S1 ; physical drive 1 goes forwards
      M569 P2 S0 ; physical drive 2 goes backwards
      M569 P3 S0 ; physical drive 3 goes forwards
      M584 X0 Y1 Z2 E3 ; set drive mapping
      M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
      M92 X80.00 Y80.00 Z400.00 E420.00 ; set steps per mm
      M566 X900.00 Y900.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
      M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min)
      M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2)
      M906 X800 Y800 Z800 E800 I30 ; set motor currents (mA) and motor idle factor in per cent
      M84 S30 ; Set idle timeout

      ; Axis Limits
      M208 X30 Y30 Z20 S1 ; set axis minima
      M208 X310 Y300 Z360 S0 ; set axis maxima

      ; Endstops
      M574 X1 S1 P"!xstop" ; configure active-high endstop for low end on X via pin !xstop
      M574 Y1 S1 P"!ystop" ; configure active-high endstop for low end on Y via pin !ystop
      M574 Z2 S2 ; configure Z-probe endstop for high end on Z

      ; Z-Probe
      M558 P1 C"zprobe.in+zprobe.mod" H5 F120 T6000 ; set Z probe type to unmodulated and the dive height + speeds
      G31 P500 X0 Y0 Z500 ; set Z probe trigger value, offset and trigger height
      M557 X80:310 Y30:260 S30 ; define mesh grid

      ; Heaters
      M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp
      M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
      M307 H0 B1 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit
      M140 H0 ; map heated bed to heater 0
      M143 H0 S120 ; set temperature limit for heater 0 to 120C
      M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin e0temp
      M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
      M307 H1 B0 S1.0 ; disable bang-bang mode for heater and set PWM limit era B0
      M143 H1 S280

      ; Fans
      M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
      M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
      M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
      M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on

      ; Tools
      M563 P0 D0 H1 F0 ; define tool 0
      G10 P0 X5 Y5 Z10 ; set tool 0 axis offsets
      G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C

      ; Custom settings are not defined

      ; Miscellaneous
      M575 P1 S1 B57600 ; enable support for PanelDue
      M501


      Homeall:

      G91 ; relative positioning
      G1 H2 Z5 F6000 ; lift Z relative to current position
      G1 H1 X-285 Y-285 F1800 ; move quickly to X or Y endstop and stop there (first pass)
      G1 H1 X-285 ; home X axis
      G1 H1 Y-285 ; home Y axis
      G1 X5 Y5 F6000 ; go back a few mm
      G1 H1 X-285 F360 ; move slowly to X axis endstop once more (second pass)
      G1 H1 Y-285 ; then move slowly to Y axis endstop
      G90 ; absolute positioning
      G1 X80 Y30 F6000 ; go to first bed probe point and home Z
      G30 ; home Z by probing the bed

      ; Uncomment the following lines to lift Z after probing
      G91 ; relative positioning
      ;G1 Z5 F50 ; lift Z relative to current position
      ;G90 ; absolute positioning

      Thank you!

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      • jay_s_ukundefined
        jay_s_uk
        last edited by

        you have a probe offset of 500mm on the Z axis.
        does your probe really trigger 500mm above the bed?
        Look at G31 in config.g

        Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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        • esobreiroundefined
          esobreiro
          last edited by esobreiro

          Yes, shoud be 1.0 - Let me test here and check if the problem still persists.
          Thanks

          UPDATE:

          The problem still persists....

          1 Reply Last reply Reply Quote 0
          • esobreiroundefined
            esobreiro
            last edited by

            UPDATE 2

            15/03/2021 13:13:19 G30 S-1
            Error: Z probe was not triggered during probing move
            15/03/2021 13:12:46 G30 S-1
            Error: Z probe was not triggered during probing move
            15/03/2021 13:12:06 G92 Z0
            15/03/2021 13:11:37 M564 S0

            1 Reply Last reply Reply Quote 0
            • jay_s_ukundefined
              jay_s_uk
              last edited by

              what type of probe do you have?

              Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

              1 Reply Last reply Reply Quote 0
              • esobreiroundefined
                esobreiro
                last edited by

                I revert the firmware to 2.05.1 (from 3.2) and its all working now! Thank you

                1 Reply Last reply Reply Quote 0
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