install the auto z-offset again

axiom

I would like to try to install the auto z-offset again. I have already connected the switch and it reacts as it should on the board (green light).
For the filament sensor, I successfully wrote the following into the config.g:
M591 D0 P3 C"e0_stop" S1 ; filament monitor connected to E0_stop
But which M-command do I have to write in for the auto z-stop?

Then I have to create a macro.
How do I call up the event and what do I have to write into the macro?...

The previous descriptions never mentioned the basics (e.g. config.g).

Now I want the macro to say that the print head moves onto the switch until it is triggered?
The switch is about 15mm higher than the bed.
Then should he set Z to zero in G92 Z0 ?
Then he should use the Z probe to read out G1 x.. y.. and Z G92 z0 via the drive switch. He should then pass this value to the config.g.

How should I do that?

OwenD

@axiom
Most of what you want to do is handled by homez.g and homeall.g

The rest is covered in these documents
https://docs.duet3d.com/User_manual/Connecting_hardware/Z_probe_connecting
After calibration, you can edit your G31 Z offset in config.g

My suggestion would be to use the RRF configuration tool to create a set of macros suited to your machine.
https://configtool.reprapfirmware.org/Start
You can then use thee as the basis for any modifications required.

Proschi3D

G31 Z0						; set Z-offset to Z=0
echo >"0:/sys/config_probe.g" "G31 Z0"

M291 S3 R"Heating up nozzle" P"Wait for the nozzle to reach printing temperatures"
M568 P0 S210				; set tool 0 (primary hotend) temperature to 230c
T0							; select tool 0 (primary hotend)
M116 P0 H5					; wait for temperature to reach within 5c of set temperature
M83							; relative extruder moves
G1 E-5 F300 				; retract 5mm of filament
G4 P0						; wait for movements to have stopped

M300 S666 P666 				; beep
M291 S3 R"Automatic Z Offset Calibration" P"Press OK to continue, or CANCEL to abort"
M291 S3 R"Homing axes" P"Remove the puck. The printer will home the X, Y, and Z axises without the puck"

M98 P"config_probe.g"												; Load BLTouch probe settings
M280 P0 S60 I1														; clear any probe errors
G29 S2                      										; cancel mesh bed compensation
G91                    												; relative positioning
M913 X50 															; X axis 50% power
G1 H2 Z5 F200          												; lift Z relative to current position
G1 H1 X{(move.axes[0].max+5)*-1} Y{move.axes[1].max+5} F6000  		; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X5 Y-5 F600      												; go back a few mm
G1 H1 X{(move.axes[0].max+5)*-1} Y{move.axes[1].max+5} F600  		; move slowly to X and Y axis endstops once more (second pass)
M913 X100 															; X axis 100% power
G90                    												; absolute positioning
G1 X{move.axes[0].min+5} Y{move.axes[1].min+5} F6000 				; move to front left
G1 F600																; reduce speed
G30                    												; home Z by probing the bed

G31 Z0						; set Z-offset to Z=0
M564 H1 S0             		; Negative movements are allowed
G29 S2						; cancel mesh bed compensation
G90 						; absolute positioning
G1 Z27						; raise Z to 27mm
G4 P0						; wait for movements to have stopped 
M291 S3 R"Clean the nozzle" P"The nozzle has been pre-heated. Clean it from any plastic debris"
G1 X100 Y200 F6000			; go to X100, Y200
G4 P0						; wait for movements to have stopped


M300 S666 P666				; beep
M291 S3 P"Place the offset tool below the nozzle and press OK to perform the macro, or CANCEL to abort"

G4 P200 					; wait 200ms
G91							; relative moves
G1 H1 Z-12 F50				; move 12mm down, stop when hitting the offset tool (but don't risk crashing the bed)
G92 Z0 						; set current position as Z=0
G4 P200 					; wait 200ms
G1 Z7 F200					; move up 7mm

G91							; relative moves
G1 X{sensors.probes[0].offsets[0] * -1} Y{sensors.probes[0].offsets[1] * -1} F1500 ; move nozzle so that BLTouch is in it's position 
G90							; absolute moves

G30 S-3 					; probes Z and adjusts the probe trigger height to match the actual stop height.
G4 P200 					; wait 200ms
G91							; relative movement
M568 P0 S0					; set tool 0 temperatures to 0

var Z_auto_offset = {sensors.probes[0].triggerHeight} ; math to calculate the BLTouch offset

	if var.Z_auto_offset < 0.01
		M291 S2 R"The nozzle has not touched the puck." P"Please check the guide for troubleshooting"
		echo "The nozzle has not touched the puck. Please check the guide for troubleshooting"
		echo >"0:/sys/config_probe.g" "G31 Z-3"
	elif var.Z_auto_offset >= 0.01 & var.Z_auto_offset < 3.5
		echo >"0:/sys/config_probe.g" "G31 Z"^{var.Z_auto_offset}
		M291 S2 R"Z-offset has been stored" P"the Z-offset has been stored in the config_probe.g file. Verify the value stored with the value displayed in the console" 
		echo "the Z-offset has been stored in the config_probe.g file. The Z-offset is", var.Z_auto_offset, "mm. Remove the offset tool and place it back in the box"
	elif var.Z_auto_offset >= 3.5
		M291 S2 R"Z-Offset is too high" P"Please verify the probe height using the probe-calibration"
		echo "Z-Offset is too high. Please verify the probe height using the probe-calibration"
		echo >"0:/sys/config_probe.g" "G31 Z-3"

M564 S1 H1      			; Negative movements are forbidden
M300 S666 P666 				; beep

G91							; relative moves
G1 Z5						; lift nozzle up 5mm
G90							; absolute moves

T-1							; deselect all tools
M18							; release steppers

axiom

@Proschi78 Thanks very much!
but I still don't understand what I have to write in the Config.g?
"M574 D0 P1 C"e0-stop" S2" ???????I'm missing the basic information

Proschi3D

@axiom
Hi,
I'm currently swamped with a lot of things.
Once I find some time, I will help you and answer your questions.
Best regards,
Jan

axiom

@Proschi78 That would be very nice and helpful...I'm completely stuck...I've made some progress...but still a long way from the goal

metabo7000

How can you do such an automatic measurement with a macro that older filmware could also interpret, e.g. 2.02(RTOS) (2018-12-24b1)!?
video1
https://www.youtube.com/watch?app=desktop&v=gvwfQ_r7xoU
video2
https://www.youtube.com/watch?app=desktop&v=00g7d2wuFAI