G30 S-1 is giving me heart stitches [SOLVED]
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Oh, there's one thing I want to ask:
I have a negative number for Zmin in the M208 S1.
Now, when I home Z, the homed height is set to -2 or whatever I set in M208.
I haven't found the right way to compensate that other than overwriting it with G92 Z0.Does it matter if my G31 Z-probe definition is before or after M208?
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@o_lampe said in G30 S-1 is giving me heart stitches:
Now, when I home Z, the homed height is set to -2 or whatever I set in M208.
post you home script
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M574 X Y S3 - where are the values for X and Y specify the location of the end stop?
You have specified the Z trigger height in G31 as 0. Usually a capacitive probe triggers a few mm off the surface.
Also capacitive probes can be slow to respond so you might need to change the F value in M558.
When you home any axis the position is set to the axis min/max based on the axis parameter in M574.
You have specified that the end stop of Z is at the low end so it gets set to Z min which you have as -2.
Why do you have Z min as -2?
Frederick
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@Veti said in G30 S-1 is giving me heart stitches:
@o_lampe said in G30 S-1 is giving me heart stitches:
Now, when I home Z, the homed height is set to -2 or whatever I set in M208.
post you home script
G91 G29 S2 G1 S1 Z-300 F800 G1 Z5 F800 G1 S1 Z-10 ;G92 Z0.0 G90 ;G29 S1 What does it mean, when DWC is giving me a warning about Z=0 datum isn't set everytime i load the heightmap?
Is it trying to do that, when it crashes against the leadscrew?
I've made two short videos to show what happens, but I'm not sure when I find the nerve to upload them to u-tube. -
that is not a home script. as it disregards any endstop
nevermind. it used the old S syntax.
that is the reason why its set to S-1
when the endstop is triggered the axis is set to the endstop position.
with a G30 this will not happen as this sets the current positon to z=0that would also get rid of the Z=0 datum message.
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@Veti
To be clear, it uses the Z-probe as endstop. -
that is wrong.
try a default homez.
; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.2.2 on Wed Jan 20 2021 13:31:39 GMT+0100 (Central European Standard Time)
G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G90 ; absolute positioning
G1 X15 Y15 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 -
@Veti said in G30 S-1 is giving me heart stitches:
with a G30 this will not happen as this sets the current positon to z=0
that would also get rid of the Z=0 datum message.So, I should use G30 instead of G1 S1?
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@Veti said in G30 S-1 is giving me heart stitches:
yes
you REALLY need to use a standard config that is generated by the config tool.
I started filling out the config wizard, but then got stuck with the stepper settings. I would have to copy my existing config settings into the wizard, so what is it good for?
I'd just copy any possible mistake into the new file, if there's any... -
@o_lampe
well it would have generated a correct homing script for once.
and as i said it will make the migration to version 3 easier -
@Veti said in G30 S-1 is giving me heart stitches:
G1 X15 Y15 F6000 ; go to first probe point
The head moves to that first probe point and then throws an error insufficient axes homed
As always I homed X/Y before homeZ with G92 X0 Y0.Do I really have to install endstops for X/Y axis?
I never needed them for my CNC. I just parked the toolhead at 0,0 before I switched off and went the G92 way to start...
I checked the homeX/Y files. They all look similar to the one I originally posted. (I had this SD-card backup from my CNC machine) -
the G30 command give you insufficient axis homed?
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@o_lampe said in G30 S-1 is giving me heart stitches:
As always I homed X/Y before homeZ with G92 X0 Y0.
The would work IF the actual positions of X and Y were zero. How do you know they are?
Do I really have to install endstops for X/Y axis?
No - you can use sensor-less homing.
I don't care for that myself. To me using physical end stop sensors for homing is like stopping your car using the brakes. Sensor-less homing seems like stopping your car by running into the car in front of you.
As to using G30: did you read the docs on what each variant of G30 does?
Frederick
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@Veti said in G30 S-1 is giving me heart stitches:
the G30 command give you insufficient axis homed?
No, the macro doesn't run G30 because of the error message.
I used jumpers on X/Y endstops and defined them as active high
When I ask M119 it reports X/Y at min endstops. Now I should be able to use the homeall macro. But it stops after the same line as above mentioned. -
post your homeall then
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@fcwilt said in G30 S-1 is giving me heart stitches:
As to using G30: did you read the docs on what each variant of G30 does?
Yes, and I also tried some other versions with various Px and Sx parameters.
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@Veti said in G30 S-1 is giving me heart stitches:
post your homeall then
; homeall file for use with dc42 Duet firmware on CoreXY printers ; This file assumes the endstop switches are at the low end of each axis. ; Reverse the X and Y movement for high-end switches. ; Adjust the bed upper and lower limits in config.g (M208 commands) to get the correct homing positions G91 ; relative mode G1 F2400 ; course home X or Y //S1 X-340 Y-240 G1 S1 X-340 ; course home X G1 S1 Y-240 ; course home Y G1 X14 Y14 F600 ; move away from the endstops G1 S1 X-20 ; fine home X G1 S1 Y-20 ; fine home Y G1 X20 Y20 F4000 G1 F600 G1 S1 Z-300 F600 G1 Z5 F200 G30 ; If you are using a microswitch for Z homing, insert similar code for the Z axis here, ; but use lower feed rates suitable for your Z axis. G90 ; back to absolute mode ; If you homed the Z axis using an endstop switch, you can insert a G92 command here to correct the height. -
what script wont work without endstops
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with the homeall script the behaviour is a bit different: it runs to 20,20 then probes (G1 S1) and runs against the rear beam.
Whenever G30 is issued,the printer freaks out.