Z axis not homing

jay_s_uk

@prior123 the P64 looks very odd. What number have you defined in your config?

PRIOR123

Ive just changed it to

M280 P0 S10 ; deploy BLTouch

and seem to have worked however now the x axis is making a horrible noise and the same error message come out. however it does say its fully homed. Im properly confused now

jay_s_uk

@prior123 have you got the x axis travelling further than total axis travel?
If it fails to find the endstops on the first move but finds it on the second, that's usually when you get that message

PRIOR123

@jay_s_uk

you were right i was on +Xaxis not - (facepalm)

Thank you

PRIOR123

@jay_s_uk

Sorry to keep on but im now having an issue where the BOLD line isnt being read. The printer just keeps the x and Y axis by the end stops

G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G1 H1 X230.5 Y235 F1800 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X-5 Y-5 F6000 ; go back a few mm
G1 H1 X230.5 Y235 F360 ; move slowly to X and Y axis endstops once more (second pass)
G90 ; absolute positioning
G1 X-38 Y-10 F6000 ; go to first bed probe point and home Z
;G1 X-100 Y-50 F6000 ; go to first bed probe point and home Z
G30 ; home Z by probing the bed

:s

PRIOR123

@prior123

if i put my finger in to make the printer think its homed the Z axis (on home all) im still getting this error too

G28
Error: in file macro line 5: M280: parameter 'P' too high

jay_s_uk

@prior123 can your printer even reach X-38 Y-10?
Post your config.g

jay_s_uk

@prior123 you may also want to check your retractprobe.g as well

PRIOR123

@jay_s_uk

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Tue Mar 16 2021 15:54:40 GMT+0000 (Greenwich Mean Time)

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

; Network
;M551 P"" ; set password
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 backwards
M569 P1 S1 ; physical drive 1 goes backwards
M569 P2 S1 ; physical drive 2 goes forwards
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 E93.00 ; set steps per mm
M566 X900.00 Y900.00 Z12.00 E1200.00 ; 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 X600 Y600 Z600 E600 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Axis Limits
M208 X-5.5 Y-10 Z0 S1 ; set axis minima
M208 X220 Y220 Z250 S0 ; set axis maxima

; Endstops
M574 X1 S1 P"xstop" ; configure active-high endstop for low end on X via pin xstop
M574 Y1 S1 P"ystop" ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S2 ; configure Z-probe endstop for low end on Z

; Z-Probe
M950 S0 C"exp.heater3" ; create servo pin 0 for BLTouch
M558 P9 C"^zprobe.in" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X-49 Y9 Z1.597 ; set Z probe trigger value, offset and trigger height
M557 X-15:165 Y20:230 S20 ; define mesh grid
;M557 X5:205 Y5:165 S20 ; Define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T98801 B4185 ; 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 ; 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"e0temp" Y"thermistor" T98801 B4185 ; 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 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S280 ; set temperature limit for heater 1 to 280C

; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 C"Part Cooling" S0 H-1 ; set fan 0 name and value. Thermostatic control is turned off
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 C"Heatsink/Hotend" S1 H1 T45 ; set fan 1 name and value. Thermostatic control is turned on
M950 F2 C"fan2" Q500 ; create fan 2 on pin fan2 and set its frequency
M106 P2 C"PartCooling" S1 H1 T45 ; set fan 2 name and value. Thermostatic control is turned on

; Tools
M563 P0 S"PrintHead01" 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
M501 ; load saved parameters from non-volatile memory
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
T0 ; select first tool

PRIOR123

@jay_s_uk This has stopped the warning sign! thank you

jay_s_uk

@prior123 all sorted now?

PRIOR123

@jay_s_uk

the homing error is fixed but the x and y positioning when homing the Z via home all isnt working

jay_s_uk

@prior123 because you're in absolute mode. Surely X-38 Y-10 is off your bed or even outside your axis limits

PRIOR123

@jay_s_uk so should i comment out that line then? sorry im pretty unknown when it comes to programming

jay_s_uk

@prior123 well where do you want the nozzle to move to when you do the G30?

PRIOR123

@jay_s_uk probably X-60 and Y-10

But i just changed that in the homeall.g and it doesnt seem to be doing anything

jay_s_uk

@prior123 how? That's way outside your bed limits set in M208 in your config

PRIOR123

@jay_s_uk this has helpe massively! thank you.

How can i work out the true measurements essentially ive defined it all no with

M208 X60 Y-10 Z0 S1 ; set axis minima
M208 X235 Y235 Z260 S0 ; set axis maxima

however im not trying to define the mesh coordinates and i am continuously getting this

Warning: Skipping grid point X=200.0, Y=180.0 because Z probe cannot reach it
Warning: Skipping grid point X=220.0, Y=180.0 because Z probe cannot reach it
Warning: Skipping grid point X=220.0, Y=200.0 because Z probe cannot reach it
Warning: Skipping grid point X=200.0, Y=200.0 because Z probe cannot reach it

PRIOR123

@prior123 the Z probe can go further im just really confused why it thinks it cant

jay_s_uk

@prior123 your z probe has an offset of x-49. That means it can probe any further than 49mm before your x maximum. So with a maximum of 235, you can only probe up to X186 (otherwise the nozzle will have to go outside the machine limits)