Z Axis home speed varies.

dc42

@Karim if you home Z after you have already run G32 then the Z homing speed will be 60mm/min because that was set in line 13 of bed.g.

To avoid this, use M558 in homez.g to reset the probing speed before the G30 command.

Karim

@dc42 ok like this

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.3.14 on Sat Oct 29 2022 11:08:05 GMT-0400 (Eastern Daylight Time)
G1 X140 Y150 F6000  ; go Center of bed
G91                ; relative positioning
G1 H2 Z5 F6000     ; lift Z relative to current position
G90                ; absolute positioning
G1 X140 Y150 F6000 ; go to first probe point
G30                ; home Z by probing the bed

M558 P5 C"^zprobe.in" H5 F300 T6000            ; set Z probe type to switch and the dive height + speeds

Phaedrux

Don't use the full line, just M558 F300. If you use the full line things can get reset in G31.

Karim

@Phaedrux said in Z Axis home speed varies.:

M558 F300

This does not work. The only way it goes to normal speed (F300) is by emergency stop or power off then power on.

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.3.14 on Sat Oct 29 2022 11:08:05 GMT-0400 (Eastern Daylight Time)
G1 X140 Y150 F6000  ; go Center of bed
G91                ; relative positioning
G1 H2 Z5 F6000     ; lift Z relative to current position
G90                ; absolute positioning
G1 X140 Y150 F6000 ; go to first probe point
G30                ; home Z by probing the bed
M558 F300          ; Reset Probe Speed.

infiniteloop

@Karim said in Z Axis home speed varies.:

This does not work.

I bet against: just home Z twice - the second time, it should run at normal speed.

I think you should move the line

M558 F300          ; Reset Probe Speed.

from the very end of home.g to its beginning - else, the intended speed change can't affect the G30 in the line above …

Karim

@infiniteloop Still does not work.

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.3.14 on Sat Oct 29 2022 11:08:05 GMT-0400 (Eastern Daylight Time)
M558 F300          ; Reset Probe Speed.
G1 X140 Y150 F6000  ; go Center of bed
G91                ; relative positioning
G1 H2 Z5 F6000     ; lift Z relative to current position
G90                ; absolute positioning
G1 X140 Y150 F6000 ; go to first probe point
G30                ; home Z by probing the bed

infiniteloop

@Karim said in Z Axis home speed varies.:

Still does not work.

Bet lost … So, I have no clue …

Karim

@infiniteloop , ok I think I got it, It's working now, I add the M558 F300 after G32 in the homeall.g

infiniteloop

@Karim said in Z Axis home speed varies.:

It's working now

Glad to hear that

Karim

Thanks guys.