Calibrate the Z probe trigger height

Phaedrux

That could work too, or just add the M558 commands to your bed.g between the iterations.

Karim

@Phaedrux Hey how about this. Do I have to add M671 S20 to bed.g

;bed_probe_points
G30 K0 P0 X0 Y0 Z-99999            ; probe point 0 near a leadscrew
G30 K0 P1 X0 Y275 Z-99999          ; probe point 1 near a leadscrew
G30 K0 P2 X282 Y275 Z-99999        ; probe point 2 near a leadscrew
G30 K0 P3 X282 Y0 Z-99999 S4       ;probe point 3 near a leadscrew and calibrate 4 motors

; bed.g
; Called to align the gantry to the bed plane via G32

M561                    ; Clear any bed transform
M84 E3                  ; Turn off noisy Extruder motor
G28                     ; Home all axes

; Probe the bed at 4 points, x3 for more precision
M558 K0 H10 F1200                ; increase the depth range, gets the gantry mostly level immediately
M98 P"/sys/bed_probe_points.g"
M558 K0 H4 F240                  ; reduce depth range, probe slower for better repeatability
M98 P"/sys/bed_probe_points.g"
M558 K0 H1 F60                   ; reduce depth range, probe slower for better repeatability
M98 P"/sys/bed_probe_points.g"


G90                     ; absolute positioning
G1 X140 Y150 F6000      ; go Center of bed
G30                     ; home Z by probing the bed

Phaedrux

@Karim said in Calibrate the Z probe trigger height:

Do I have to add M671 S20 to bed.g

No that should probably stay in config.g. Only call it if you intend to change it.

Karim

@Phaedrux ok what do this means.

The K parameter is applicable to all G30 commands. It is the Z probe number, default 0. It is not remembered between G30 commands, it always defaults to 0.

For example I use it here.
M558 K0 H4 F240

Phaedrux

Do you actually have multiple probes? If not, just remove the K0 entirely from all commands.

Karim

@Phaedrux like this.

;bed_probe_points
G30 P0 X0 Y0 Z-99999            ; probe point 0 near a leadscrew
G30 P1 X0 Y275 Z-99999          ; probe point 1 near a leadscrew
G30 P2 X282 Y275 Z-99999        ; probe point 2 near a leadscrew
G30 P3 X282 Y0 Z-99999 S4       ;probe point 3 near a leadscrew and calibrate 4 motors

also the K0 in here too.

; bed.g
; Called to align the gantry to the bed plane via G32

M561                    ; Clear any bed transform
M84 E3                  ; Turn off noisy Extruder motor
G28                     ; Home all axes

; Probe the bed at 4 points, x3 for more precision
M558 K0 H10 F1200                ; increase the depth range, gets the gantry mostly level immediately
M98 P"/sys/bed_probe_points.g"
M558 K0 H4 F240                  ; reduce depth range, probe slower for better repeatability
M98 P"/sys/bed_probe_points.g"
M558 K0 H1 F60                   ; reduce depth range, probe slower for better repeatability
M98 P"/sys/bed_probe_points.g"


G90                     ; absolute positioning
G1 X140 Y150 F6000      ; go Center of bed
G30                     ; home Z by probing the bed

Phaedrux

Yes but how many probe devices do you actually have?

Karim

@Phaedrux one z probe, no z end stop switch

Phaedrux

Then you don't need K0 anywhere.

Karim

@Phaedrux Got it working, Thank You.