M401 don't deploy the Bltouch



  • I have a Duet maestro, the firmware version is 2.0

    I did the wiring and everything goes well. Motors are moving, limits switch are good, fans are running, bed and extruder are heating. Even the Bltouch is working... but only when I power-up my printer. My probe is deploying and retracting twice at the start but when I send the M401 command the Bltouch is not deploying. The G30 does not work either, it lower the z but the probe is not deployed.

    I wired my Bltouch in the probe connector :

    2dc19049-2a7a-4ee5-8f29-75a1d03c6011-image.png .https://d17kynu4zpq5hy.cloudfront.net/igi/duet3d/BJKPq1sdZcJNUmP4.standard

    My config.g :

    ; Configuration file for Duet Maestro (firmware version 2.00)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool v3.1.4 on Thu Jul 16 2020 22:15:33 GMT-0400 (EDT)

    ; General preferences
    G90 ; send absolute coordinates...
    M83 ; ...but relative extruder moves
    M550 P"Cr10-P0" ; set printer name

    ; Network
    M551 P"cr10" ; set password
    M552 P192.168.2.55 S1 ; enable network and set IP address
    M553 P255.255.255.0 ; set netmask
    M554 P192.168.2.1 ; set gateway
    M586 P0 S1 ; enable HTTP
    M586 P1 S0 ; disable FTP
    M586 P2 S0 ; disable Telnet

    ; Drives
    M569 P0 S0 ; physical drive 0 goes backwards
    M569 P1 S0 ; physical drive 1 goes backwards
    M569 P2 S1 ; physical drive 2 goes forwards
    M569 P3 S1 ; 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 E97.00 ; set steps per mm
    M566 X900.00 Y900.00 Z12.00 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 X900 Y900 Z900 E900 I30 ; 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 X250 Y280 Z310 S0 ; set axis maxima

    ; Endstops
    M574 X1 Y1 S1 ; set active high endstops
    M574 Z1 S2 ; set endstops controlled by probe

    ; Z-Probe
    M558 P9 H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds
    G31 P500 X40 Y40 Z2.5 ; set Z probe trigger value, offset and trigger height
    M557 X15:210 Y15:240 S15 ; define mesh grid

    ; Heaters
    M305 P0 T100000 B4138 R2200 ; set thermistor + ADC parameters for heater 0
    M143 H0 S110 ; set temperature limit for heater 0 to 110C
    M305 P1 T100000 B4138 R2200 ; set thermistor + ADC parameters for heater 1
    M143 H1 S280 ; set temperature limit for heater 1 to 280C

    ; Fans
    M106 P0 S1 I0 F500 H-1 ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P1 S1 I0 F500 H1 T80 ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
    M106 P2 S1 I0 F500 H1 T80 ; set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

    ; Tools
    M563 P0 D0 H1 F0 ; 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

    ; Miscellaneous
    M911 S22 R24 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss

    My bed.g :

    ; bed.g
    ; called to perform automatic bed compensation via G32
    ;
    ; generated by RepRapFirmware Configuration Tool v3.1.4 on Thu Jul 16 2020 22:15:33 GMT-0400 (EDT)
    M561 ; clear any bed transform
    G29 ; probe the bed and enable compensation

    My deployprobe.g
    ; deployprobe.g
    ; called to deploy a physical Z probe
    ;
    ; generated by RepRapFirmware Configuration Tool v3.1.4 on Thu Jul 16 2020 22:15:33 GMT-0400 (EDT)
    M280 P64 S10 I1 ; deploy BLTouch

    My retractprobe.g
    ; retractprobe.g
    ; called to retract a physical Z probe
    ;
    ; generated by RepRapFirmware Configuration Tool v3.1.4 on Thu Jul 16 2020 22:15:33 GMT-0400 (EDT)
    M280 P64 S90 I1 ; retract BLTouch

    thanks for any help


  • administrators

    Remove the I1 parameters from the M280 commands in deployprobe.g and retractprobe.g files.



  • @Émile said in M401 don't deploy the Bltouch:

    G31 P500 X40 Y40 Z2.5

    If it's still not working after dc42's change, please set P to 25 for
    G31 P500 X40 Y40 Z2.5
    because in most cases P25 is used for BLtouch, so please set it to
    G31 P25 X40 Y40 Z2.5



  • @dc42

    Tanks a lot! It work!
    But now when I send G30 the Bltouch don't really trigger. It retract when touching the bed but the z axis don't stop. On the interface the Z-Probe stay 0.

    config.g :
    ; Endstops
    M574 X1 Y1 S1 ; set active high endstops
    M574 Z1 S2 ; set endstops controlled by probe

    ; Z-Probe
    M558 P9 H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds
    G31 P25 X40 Y40 Z2.5 ; set Z probe trigger value, offset and trigger height
    M557 X15:210 Y15:240 S15 ; define mesh grid

    deployprobe.g :
    M280 P64 S10 ; deploy BLTouch

    retractprobe.g :
    M280 P64 S90 ; retract BLTouch

    homez.g :
    G91 ; relative positioning
    G1 S2 Z5 F6000 ; lift Z relative to current position
    G90 ; absolute positioning
    G1 X-25 Y-25 F6000 ; go to first probe point
    G30 ; home Z by probing the bed

    ; Uncomment the following lines to lift Z after probing
    ;G91 ; relative positioning
    ;G1 Z5 F100 ; lift Z relative to current position
    ;G90 ; absolute positioning


  • Moderator

    @Émile said in M401 don't deploy the Bltouch:

    It retract when touching the bed but the z axis don't stop.

    Double check the white wire for continuity.

    Also, if you're using firmware 2.0 you should really consider updating to at least 2.05.1.


Log in to reply