Homing Failed but used to work just fine



  • Hello I have been printing on my FT5 for a while after I figured out how to home everything in the right direction. The printer was working perfectly then suddenly it starts throwing a G28 homing failure every time I try to home. i checked and double checked the wires and even rewired some of the pins but still getting this error. I am really confused I do not have a z probe but when i give the M119 it says that my z probe has not been triggered could that be the issue... I am really not sure any help is much appreciated
    Here is my config and homing files...
    ;;
    ;; Folgertech FT5 Configuration
    M111 S0 ; Debugging off
    G21 ; Work in millimetres
    G90 ; Send absolute coordinates...
    M83 ; ...but relative extruder moves
    M555 P2 ; Set firmware compatibility to look like Marlin
    M208 X0 Y0 Z0 S1 ; Set axis minima
    M208 X300 Y300 Z300 S0 ; Set axis maxima

    M574 X2 Y2 Z0 S0 ; Define active high microswitches

    M558 P0 X0 Y0 Z1 H3 F200 T5000 R0 ; smart IR Z probe, used for homing Z axis only, dive height 3mm, probe speed 200mm/min, travel speed 5000mm/min, no recovery time
    G31 P500 X11.0 Y0.5 Z1.65 ; set threshold and offsets

    M584 X0 Y1:4 Z2 E3 ; Map to specific drives

    M569 P0 S1 ; Drive 0 - X
    M569 P1 S1 ; Drive 1 - Y
    M569 P2 S0 ; Drive 2 - Z
    M569 P3 S0 ; Drive 3 - E0
    M569 P4 S1 ; Drive 4 - Y

    M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
    M92 X80 Y80 Z399 E492.45 ; Set steps per mm
    M566 X1200 Y1200 Z60 E120 ; Set maximum instantaneous speed changes (mm/min)
    M203 X8000 Y8000 Z600 E1200 ; Set maximum speeds (mm/min)
    M201 X1500 Y1500 Z500 E250 ; Set accelerations (mm/s^2)
    M906 X1000 Y1800 Z1000 E900 I30 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    M143 S260 ; Set maximum heater temperature to 260C
    M305 P0 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heated bed (Heater 0)
    M305 P1 T100000 B4388 C0 R4700 ; Set thermistor + ADC parameters for E0 (Heater 1)

    M307 H0 A281.7 C430.4 D4.4 B0 ; Bed PID
    M307 H1 A344.7 C122.8 D5.5 B0 ; Hotend PID
    M307 H3 A-1 C-1 D-1 ; BLTouch

    M563 P0 D0 H1 ; Define tool 0
    G10 P0 X0 Y0 ; Set tool 0 axis offsets
    G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

    M550 PGraceFT5 ; Set machine name
    M552 P192.168.1.6 S1 ; Enable network and acquire dynamic address via DHCP

    M106 P0 S0 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P1 S255 I0 F500 H1 T50 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
    M106 P2 S255 I0 F500 H1 T50 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

    T0 ; Select first tool

    Home x
    ; /sys/homex.g

    M402 ; make sure the probe is retracted

    G1 X300 F5000 S1 ; move quickly to X axis endstop and stop there (first pass)

    G91 ; relative moves
    G1 X-5 F6000 ; go back a 5mm
    G90 ; absolute moves
    M400 ; wait for the move to complete

    G1 X300 F360 S1 ; move slowly to X axis endstop once more (second pass)
    Home y
    ; /sys/homey.g

    M402 ; make sure the probe is retracted

    G1 Y300 F6000 S1 ; move quickly to Y axis endstop and stop there (first pass)

    G91 ; relative moves
    G1 Y-5 F6000 ; go back a 5mm
    G90 ; absolute moves
    M400 ; wait for the move to complete

    G1 Y300 F360 S1 ; move slowly to Y axis endstop once more (second pass)
    Home Z

    G1 Z-300 F5000 S1 ; move quickly to X axis endstop and stop there (first pass)

    G91 ; relative moves
    G1 Z5 F6000 ; go back a 5mm
    G90 ; absolute moves
    M400 ; wait for the move to complete

    G1 Z-300 F360 S1 ; move slowly to X axis endstop once more (second pass)


  • Moderator

    Are you using a BLTouch or an IR sensor?

    M558 P0 X0 Y0 Z1 H3 F200 T5000 R0 ; smart IR Z probe,

    That would indicate IR probe.

    M307 H3 A-1 C-1 D-1 ; BLTouch
    M402 ; make sure the probe is retracted

    That would indicate BLTouch.

    Home Z G1 Z-300 F5000 S1 ; move quickly to X axis endstop and stop there (first pass)

    That would indicate an endstop switch.

    M574 X2 Y2 Z0 S0 ; Define active high microswitches

    Except that would indicate no Z endstop at all.

    I'm not sure how this ever worked.


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