G28 Z error homing failed

Gixxerfast

@frnknstn said in G28 Z error homing failed:

; Z Probe Offset (Probe behind Afterburner) G31 P500 X0 Y21 Z5-.07

This doesn't look all OK. The minus sign is a bit misplaced.

Also, I don't understand why you show the bed.g macro when talking about homing Z (G28 Z). Z must be homed before you can run bed leveling.

G28 Z when called is executing the homez.g macro to home z.

G32 (bed leveling) is calling the bed.g macro when leveling the bed or quad gantry leveling as with the Voron 2.4.
G29 (bed mesh) is calling the mesh.g to create a bed mesh to compensato for an uneven bed or bent gantry.

frnknstn

@gixxerfast so my z home has to be off an estop. I cant use a specific point on the bed with the probe. Im not trying to be a pest i am trying to learn

Gixxerfast

@frnknstn No problem.

No you can home with a probe. You just config it in homez.g and in homeall.g (I just call homez.g in my homeall.g).

I just don't understand what the problem is right now.

Can you home all axis?

What printer did you have now again?

Gixxerfast

@frnknstn Don't get frustrated. Just do one thing at the time.

Fix the Z-homing first, then move on

frnknstn

@gixxerfast i have been trying to figure this out on my own so i wasnt bothering people. but for some reason i think i keep making it worse.

I am kind of running a voron2.4, i am running the voron gantry style with Duet3 6hc and expansion
I installed a z stop thinking i was suppose to use that then the bed levels from that setting. but i keep reading i dont need a z endstop. So im not sure. I am really trying to learn this but i think someone telling what to do and why its that way is the only way it seems i can comprehend this stuff.

frnknstn

@frnknstn i can home x and y. when i tell it to home z it starts probing, when thats complete i get errors

frnknstn

@frnknstn ```
This is the homez

; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Thu Apr 23 2020 19:55:13 GMT+0100 (British Summer Time)
G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G90 ; absolute positioning
G1 X50 Y50 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

This is the home all

; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Thu Apr 23 2020 19:55:13 GMT+0100 (British Summer Time)
G91                     ; relative positioning
G1 H1 X-335  Y-335      ; move quickly to X or Y endstop and stop there (first pass)
G1 X5 Z5 F6000          ; go back a few mm
G1 H1 X-335 F360        ; move slowly to X axis endstop once more (second pass)
G1 H1 Y-335 F360        ; move slowly to Y axis endstop once more (second pass)
G1 X50 Y50		; Move z probe over bed
G1 H1 Z-405             ; then move slowly to Z axis endstop
G1 H1 Z5 F6000          ; lift Z relative to current position
G1 H1 Z-335 F1800       ; move Z down stopping at the endstop
G90                     ; absolute positioning

frnknstn

@frnknstn i am trying to go by these and adjust them

Phaedrux

@frnknstn said in G28 Z error homing failed:

@frnknstn i can home x and y. when i tell it to home z it starts probing, when thats complete i get errors

What is the error?

JoergS5

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