Strange behavior during Print

  • Hello,

    I have been facing some strange behaviors with my new setup:

    1-Attempting to extrude with no tool selected
    Occurs occasionally during a print task after a while, often, when I do not restart the board after a finished job.
    The print task continues with no extrusion.

    2-Bad command M408 S0 R1 or M408 S1.
    Occurs during the print but apparently has no impact in the printing job.

    Board: Duet 2 Maestro (2Maestro)
    Firmware: RepRapFirmware for Duet 2 Maestro 3.1.1 (2020-05-19b2)

    Config File:

    ; Configuration file for Duet Maestro (firmware version 3)
    ; executed by the firmware on start-up
    ; generated by RepRapFirmware Configuration Tool v3.1.3 on Thu Jul 02 2020 14:55:54 GMT-0300 (Horário Padrão de Brasília)

    ; General preferences
    G90 ; send absolute coordinates...
    M83 ; ...but relative extruder moves
    M550 P"Impressora do Erick" ; set printer name
    M669 K1 ; select CoreXY mode

    ; Network
    M552 P192.168.2.81 S1 ; enable network and set IP address
    M553 P255.0.0.0 ; set netmask
    M554 P192.168.2.85 ; set gateway
    M586 P0 S1 ; enable HTTP
    M586 P1 S1 ; enable 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 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 E100.00 ; set steps per mm
    M566 X600.00 Y600.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min) 120 para 300
    M203 X18000.00 Y18000.00 Z180.00 E1000.00 ; set maximum speeds (mm/min)
    M201 X3000.00 Y3000.00 Z100.00 E10000.00 ; set accelerations (mm/s^2)
    M906 X1100 Y1100 Z1100 E1100 I30 ; set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    ; Drives

    ;M92 X80.00 Y80.00 Z400.00 E442.00 ; Set steps per mm
    ;M566 X1000.00 Y1000.00 Z800.00 E120.00 ; Set maximum instantaneous speed changes (mm/min)
    ;M203 X18000.00 Y18000.00 Z900.00 E1200.00 ; Set maximum speeds (mm/min)
    ;M201 X3000.00 Y3000.00 Z1000.00 E250.00 ; Set accelerations (mm/s^2)
    ;M906 X1300.00 Y1300.00 Z1300.00 E1300.00 I35 ; Set motor currents (mA) and motor idle factor in per cent
    ;M84 S30 ; Set idle timeout

    ; Axis Limits
    M208 X2 Y2 Z0 S1 ; set axis minima
    M208 X328 Y328 Z400 S0 ; set axis maxima

    ;M208 X2:330 Y2:330 Z2:400 ; set axis limits

    ; configure Z-probe endstop for low end

    M574 X2 S1 P"!xstop" ; configure active-high endstop for high end on X via pin !xstop
    M574 Y2 S1 P"!ystop" ; configure active-high endstop for high end on Y via pin !ystop
    M574 Z2 S2 ; configure Z-probe endstop for high end on Z
    G28 ; home
    M557 X40:550 Y40:550 S50
    M558 P1 C"!" H5 F120 T6000 ; set Z probe type to unmodulated and the dive height + speeds
    G31 P500 X10 Y10 Z0 ; set Z probe trigger value, offset and trigger height
    G30 P500 X0 Y0 Z-99999 S2 ; probe near a leadscrew and calibrate 2 motors

    ; Heaters

    ;M305 S0 T100000 B3950
    ;M305 S1 T100000 B3950
    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 B0 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit ---B0 teste
    M140 H0 ; map heated bed to heater 0
    M143 H0 S120 ; set temperature limit for heater 0 to 120C
    M303 H0 S260 ; auto tune heater 1, default PWM, 240C target or maximum temperature
    M303 ; report the auto-tune status or last result

    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 S0.5 ; disable bang-bang mode for heater and set PWM limit

    ; Fans
    M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
    M106 P0 C"Resfriamento" S0 H-1 ; set fan 0 name and value. Thermostatic control is turned off
    M950 F1 C"fan1" Q250 ; create fan 1 on pin fan1 and set its frequency
    M106 P1 C"Extrusora" S1 H1 T45 ; set fan 1 name and value. 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
    M575 P1 S1 B57600 ; enable support for PanelDue

    Best regards,


  • Moderator

    You may want to add T0 to the end of your config.g to ensure your first tool is enabled at startup. That may solve some occasions where a tool isn't selected if your slicer doesn't explicitly choose a tool or you don't have a T0 in your slicer start gcode. It doesn't hurt to have it in both places.

    Is your slicer inserting some M408 commands? Not sure why they would be there. If you search the gcode file for M408 are they actually present?

  • Thank you, T0 solve the error!

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