Confused after FW upgrade to 3.3

jay_s_uk

@chefffe looks like your Z axis is moving the wrong way

M569 P2 S0                                     ; physical drive 2 goes forwards

change the S0 on that line to S1

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.3.10 on Tue Dec 21 2021 12:54:13 GMT+0100 (Mitteleuropäische Normalzeit)
G91                     ; relative positioning
G1 H2 Z5 F6000          ; lift Z relative to current position
G1 H1 X-295 F1800             ; home X axis
G1 H1 Y-255 F1800             ; home Y axis
G1 X5 Y5 F6000          ; go back a few mm
G1 H1 X-295 F360        ; move slowly to X axis endstop once more (second pass)
G1 H1 Y-255 F60            ; then move slowly to Y axis endstop
G1 X5 Y5 F6000          ; go back a few mm
G1 H1 Z-245 F360         ; move Z up stopping at the endstop
G1 Z5
G90                     ; absolute positioning

; Uncomment the following lines to lift Z after probing
;G91                    ; relative positioning
;G1 Z5 F100             ; lift Z relative to current position
;G90                    ; absolute positioning

and Z

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.3.10 on Tue Dec 21 2021 12:54:13 GMT+0100 (Mitteleuropäische Normalzeit)
G91              ; relative positioning
G1 H2 Z5 F6000   ; lift Z relative to current position
G1 H1 Z-245 F1800 ; move Z up until the endstop is triggered
G1 Z5
G90
 
; Uncomment the following lines to lift Z after probing
;G91             ; relative positioning
;G1 Z5 F100      ; lift Z relative to current position
;G90             ; absolute positioning

Give those a whirl

chefffe

@jay_s_uk
With that change the homez.g works. The homeall works as well but when I try to move Z after homing the movement is reversed. I assume I need to reverse the Z motor again?

jay_s_uk

@chefffe
where is your endstop at? zmin?
you should use + movements to move away from the bed or bed away from the nozzle and vice versa

chefffe

@jay_s_uk
My Z Endstop is at the top end close to the nozzle. When triggered the bed should only be able to go down (-).

This is current state:
M119
Endstops - X: at min stop, Y: not stopped, Z: at max stop, Z probe: at min stop

When I press - I expect the bed going down, with + up. The Z-Endstop ist an optical, which is normally on (off when triggered).

chefffe

This is my homeall.g from the old configuration running fine:

G91                     ; relative positioning
G1 Z5 F6000 S2          ; lift Z relative to current position
G1 S1 y-255 f3000
G1 Y5 f3000
G1 S1 y-255 f360

G1 S1 x-295 f3000
G1 x5 f3000
G1 S1 x-295 f360

G1 S1 z-245 f3000
G1 z5 f3000
G1 S1 z-245 f360

G1 S1 X-295 F360        ; move slowly to X axis endstop once more (second pass)
G1 S1 Y-255             ; then move slowly to Y axis endstop
G1 S1 Z-245 F360       ; move Z down stopping at the endstop
G90                     ; absolute positioning
G92 Z0                  ; set Z to axis minimum (you may want to adjust this)

This the old homez.g.

```
G91               ; relative positioning
G1 Z5 F6000 S2    ; lift Z relative to current position
G1 S1 Z-255 F1800 ; move Z down until the endstop is triggered
G92 Z0            ; set Z position to axis minimum (you may want to adjust this)

; Uncomment the following lines to lift Z after probing
;G91              ; relative positioning
;G1 S2 Z5 F100    ; lift Z relative to current position
;G90              ; absolute positioning

```

jay_s_uk

@chefffe to move your bed away it should be a positive movement, not a negative movement

chefffe

@jay_s_uk
I see that in my old config.g the Z axe was also configured like you said:
M569 P2 S1
Maybe I mix now something up.
I set the Duet up about 3 years ago and forgot a lot shame on me ...
I will print later on something, then its clear. Many thanks for now!

chefffe

@jay_s_uk
After "playing" a little bit around I end up now that homing works fine ... but ... after Z homing the Z axe is only moving in minus direction (up towards nozzle) and not in plus direction (down away from nozzle). I couldnt yet find what could cause this ?
The Z axe stops every plus movement after leaving the Z Endstop.

dc42

@chefffe what M574 Z command are you currently using in config.g ?

chefffe

@dc42
Hi, it is ->
; Endstops
M574 X0 S1 P"!xstop" ; configure switch-type (e.g. microswitch) endstop for low end on X via pin xstop
M574 Y1 S1 P"!ystop" ; configure switch-type (e.g. microswitch) endstop for low end on Y via pin ystop
M574 Z2 S1 P"zstop" ; configure switch-type (e.g. microswitch) endstop for high end on Z via pin !zstop

When I add the ! to Z I get an error that the endstop is not working. The endstop type is an optical which is normal "on" and triggered "off".

jay_s_uk

@chefffe change the Z2 to Z1

chefffe

@jay_s_uk
This did the trick!! I am very happy, Great Forum thanks again!