Duet 3 3.1.1 Homing does a double take

[mrenz999]

A couple of problems with my homing. I suppose I should address them both. When I homeall it homes x then y then z. I have it home in the center of the bed. Then it shoots the head to the far right corner and tries to home again. Second issues is repeatability with DC42 IR probe. I will make a second post under the correct heading for that.

; generated by RepRapFirmware Configuration Tool v3.1.1 on Thu Jun 04 2020 11:20:25 GMT-0700 (Pacific Daylight Time)

G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G1 H1 X-500 Y-500 F3000 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H1 X-500
G1 H1 Y-500
G1 X5 Y5 F6000 ; go back a few mm
G1 H1 X-500 Y-500 F360 ; move slowly to X and Y axis endstops once more (second pass)
G1 X222 Y201 F9000 ; go to first bed probe point and home Z
G30 ; probe the bed

; Configuration file for Duet 3 (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.3 on Tue Jun 16 2020 08:02:01 GMT-0700 (Pacific Daylight Time)

; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
G21 ; Set units to MM
M550 P"Duet 3" ; set printer name
M669 K1 ; select CoreXY mode

;Network
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable FTP
M586 P2 S0 ; disable Telnet

; Drives
M569 P0.0 S1 ; physical drive 0.0 goes forwards
M569 P0.1 S0 ; physical drive 0.1 goes backwards
M569 P0.2 S1 ; physical drive 0.2 goes forwards
M569 P0.3 S1 ; physical drive 0.3 goes forwards
M569 P0.4 S0 ; physical drive 0.4 goes backwards
M569 P0.5 S1 ; physical drive 0.5 goes forwards
M569 P1.0 S0 ; physical drive 1.0 goes forwards
M584 X0.0 Y0.1 Z0.2:0.3:0.4 E0.5:1.0 ; set drive mapping
M350 X16 Y16 Z16 E16:16 I1 ; configure microstepping with interpolation
M92 X100.00 Y100.00 Z400.00 E408:408 ; set steps per mm
M566 X600.00 Y600.00 Z24.00 E300.00:300.00 ; set maximum instantaneous speed changes (mm/min)
M203 X20000 Y20000 Z600 E2000.00:2000.00 ; set maximum speeds (mm/min)
M201 X3000.00 Y3000.00 Z600.00 E5000.00:5000.00 ; set accelerations (mm/s^2)
M906 X1300 Y1300 Z1300 E800:800 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout
M671 X-55:460:460 Y150:315:40 S9 ; leadscrews at rear left, front middle and rear right

; Axis Limits
M208 X Y0 Z0 S1 ; set axis minima
M208 X410 Y410 Z465 S0 ; set axis maxima

; Endstops
M574 X1 S1 P"!io0.in" ; configure active-high endstop for low end on X via pin !io0.in
M574 Y1 S1 P"!io1.in" ; configure active-high endstop for low end on Y via pin !io1.in
M574 Z1 S2 ; configure Z-probe endstop for low end on Z

; Z-Probe
;M950 S0 C"io7.out" ; create servo pin 0 for BLTouch
;M558 P9 C"^io7.in" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds height + speeds
;G31 P500 X-40 Y-10 Z6 ; set Z probe trigger value, offset and trigger height
;M557 X20:430 Y15:410 S20 ; define mesh grid
Z-Probe
M558 P8 C"^io7.out" H10 F120 T6000
G31 P50 X-40 Y-10 Z15
M557 X20:400 Y20:400 S50

; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B4008 ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0" T0 ; create bed heater output on out0 and map it to sensor 0
M307 H0 B0 S1.00 ; disable 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"temp1" Y"thermistor" T100000 B3950 ; configure sensor 1 as thermistor on pin temp1
M950 H1 C"out1" T1 ; create nozzle heater output on out1 and map it to sensor 1
M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S300
M307 H0 A188.5 C683.1 D0.2 S1.0 V24.1 B0
M307 H1 A351.2 C120.5 D7.2 S1.0 V24.1 B0

; Fans
M950 F0 C"out7" Q500 ; create fan 0 on pin out7 and set its frequency
M106 P0 S1 H-1 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"out8" Q500 ; create fan 1 on pin out8 and set its frequency
M106 P1 S1 H-1 ; set fan 1 value. Thermostatic control is turned off
M950 F2 C"out9" Q500 ; create fan 2 on pin out9 and set its frequency
M106 P2 S1 H-1 ; set fan 2 value. Thermostatic control is turned off

; 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

; Tools
M563 P1 D1 H1 F0
G10 P1 X0 Y0 Z0
G10 P1 R0 S0

; Custom settings are not defined

; Miscellaneous
T0
M575 P1 S1 B57600 ; enable support for PanelDue
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
M501

[Phaedrux]

@mrenz999 said in Duet 3 3.1.1 Homing does a double take:

G1 H1 X-500 Y-500 F360 ; move slowly to X and Y axis endstops once more (second pass)
G1 X222 Y201 F9000 ; go to first bed probe point and home Z
G30 ; probe the bed

Try changing that section to this

G1 H1 X-500 F360 
G1 H1 Y-500 F360 
G90 ; absolute positioning
G1 X222 Y201 F9000 ; go to first bed probe point and home Z
G30 ; probe the bed

@mrenz999 said in Duet 3 3.1.1 Homing does a double take:

Then it shoots the head to the far right corner and tries to home again.

I don't see anything in your homeall that though, but maybe those changes above is enough.