Z probe triggers far away from bed



  • My printer was working fine until I had to pause a print because my print detached from the bed. So I paused the print, lifted the nozzle, cleared the bed and sprayed some hairspray on the bed. I restarted the print and when it went to home the Z axis, for some reason the probe would trigger far from the bed, like 80 mm away. Even when I manual move the nozzle through the Web Controller, I can see that the probe has a value of 0 up to a certain height at which it switches to 1000 (triggered). Although it shows that the probe is triggered on the Web Controller, physically on the probe, the LED light is still on (not triggered).

    This is the probe i'm using:
    https://www.aliexpress.com/item/32803870919.html?spm=a2g0s.9042311.0.0.27426c374V9P8g


  • Moderator

    Share your configs please.



  • ; Configuration file for Duet WiFi (firmware version 2.03)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool v2.1.8 on Fri Mar 27 2020 09:56:13 GMT-0400 (Eastern Daylight Time)

    ; General preferences
    G90 ; send absolute coordinates...
    M83 ; ...but relative extruder moves
    M550 P"Voron 2.2" ; set printer name

    M667 S1 ; select CoreXY mode

    ; Network
    M552 S-1
    G4 S3
    M552 S0
    G4 S5
    M587 S"Rogers" P"QcRt34E5g"
    M552 S1 ; enable network
    M586 P0 S1 ; enable HTTP
    M586 P1 S0 ; disable FTP
    M586 P2 S0 ; disable Telnet

    ; Drives
    M569 P0 S1 ; physical drive 0 goes forwards
    M569 P1 S1 ; physical drive 1 goes forwards
    M569 P2 S1 ; physical drive 2 goes forwards
    M569 P3 S0 ; physical drive 3 goes forwards
    M569 P4 S1 ; physical drive 4 goes forwards
    M569 P5 S1 ; physical drive 5 goes forwards
    M569 P6 S0 ; physical drive 6 goes forwards
    M584 X0 Y1 Z2:3:4:6 E5 ; set drive mapping
    M671 X-55:-55:305:305 Y-7:320:320:-7 S10 ; set positions of Z belts
    M350 X16 Y16 Z16 E16 I1 ; configure microstepping without interpolation
    M92 X78.3 Y79.05 Z320.98 E411.72 ; set steps per mm
    M566 X600.00 Y600.00 Z3600 E900.00 ; set maximum instantaneous speed changes (mm/min)
    M203 X18000.00 Y18000.00 Z18000.00 E7500 ; set maximum speeds (mm/min)
    M201 X1000.00 Y1000.00 Z60 E10000.00 ; set accelerations (mm/s^2)
    M906 X1200 Y1200 Z1200 E1000 I70 ; set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    ; Axis Limits
    M208 X0 Y0 Z0 S1 ; set axis minima
    M208 X280 Y300 Z260 S0 ; set axis maxima

    ; Endstops
    M574 X2 Y2 S1 ; set active high endstops
    M574 Z1 S2 ; set endstops controlled by probe

    ; Z-Probe
    M558 P5 H5 F120 T7200 R0.1 ; set Z probe type to switch and the dive height + speeds
    G31 P500 X0 Y-25 Z4.6 ; set Z probe trigger value, offset and trigger height
    M557 X20:260 Y-5:210 S120:107.5 ; define mesh grid

    ; Heaters
    M307 H0 B0 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit
    M307 H1 A284.6 C91.0 D2.1 V12.1 B0
    M305 P0 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 0
    M143 H0 S120 ; set temperature limit for heater 0 to 120C
    M305 P1 T100000 B4138 R4700 X3 ; set thermistor + ADC parameters for heater 1 and remap it to channel 3
    M143 H1 S280 ; set temperature limit for heater 1 to 280C

    ; Fans
    M106 P0 S1 I0 F500 H1 T45 ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
    M106 P1 S0 I0 F500 H-1 ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P2 S0 I0 F500 H-1 ; set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned off

    ; Tools
    M563 P0 D0 H1 F1:2 ; define tool 0
    G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
    G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C

    ; Custom settings are not defined


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