How to Set Z home
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I am using a switch to home XYZ. When I home Z the nozzle is about .3mm below the bed. I have been trying figure out how to set it so it knows this. When I home XY the web interface shows X-33 Y-10 but Z still shows Z0.0.
; Axis Limits
M208 X-33 Y-10 Z-0.3 S1 ; set axis minima
M208 X220 Y220 Z240 S0 ; set axis maximaI also tried editing the homeZ.g and the homeall.g
G92 Z0.3 ; set Z position to axis minimum (you may want to adjust this)What am I doing Wrong?
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Can you post your homing files? Maybe your full config.g too.
Do you mean that the nozzle is pushing into the bed surface? How are you measuring -0.3?
When you trigger the endstop the position is set to either the minima or maxima from M208. So triggering the zmin endstop should set the position to -0.3 as you have that as your minima. Unless it's being reset with an G92 Z after hitting the endstop.
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@Keith53 said in How to Set Z home:
G92 Z0.3 ; set Z position to axis minimum (you may want to adjust this)
Have you tride G91 Z-0.3?
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@Phaedrux said in How to Set Z home:
Can you post your homing files? Maybe your full config.g too.
Do you mean that the nozzle is pushing into the bed surface? How are you measuring -0.3?
When you trigger the endstop the position is set to either the minima or maxima from M208. So triggering the zmin endstop should set the position to -0.3 as you have that as your minima. Unless it's being reset with an G92 Z after hitting the endstop.
The G92 Z0 was resetting it in the homeall.g and homez.g files. I commented out ;G92 Zxxx and now when it is on the Z end stop it shows what is in M208 below Thanks!
M208 X-33 Y-10 Z-0.3 S1
Not sure why G92 Z-.03 did not work. I use G92 on mills at work sounds like it should do the same thing on the printer.
G92 "Change Work Coordinate System"
G92 X0 Y0 Z=VTOFH[VTLCN]+12.7
This would set where the spindle is now to X0 Y0 and Z would be the current tool in the spindles length+12.7 -
@Keith53 said in How to Set Z home:
Not sure why G92 Z-.03 did not work.
I'd have to see the actual file to venture a guess.
Using G92 in the homing files is a bit of a kludge honestly. Best to refrain if possible.
