I installed a z zero toutch plate on my machine. the toutch plate has a wire going to pin a5 on the arduino board and there is a clamp going to my bit with a wire going to the negative terminal of my power supply where the spindle gets it power
if you want the excell work sheet i am using ill send it to you jusr send me your email
here is a video of what i did. this is not me i just got the idea from this video
yes i am using USG to send the command lets say my bit is 1/8 so .125 and my plats is 1/2 so .5
the first line of code i would run is for the x then y then z and it will look like this
x G38.2 X-.5 F1;G92 X0.0625
y G38.2 Y-.5 F1;G92 Y0.0625
z G38.2 Z-.5 F1;G92 Z0.5;G0 Z0.25
it moves 1/16 inch in said direction then UGS says probe fail and alarm on does not mater order xyz
yxz zxy ect same every time
Translated:
g91 - switch to relative mode
g21 - fractional instead of metric (I use a 1-2-3 block that’s 1" high as a touchplate)
G38.2 Z-1 F3 probe down one inch (that’s the -1) at a feed rate of 3" per minute
g10 p1 l20 z1 - set the Z work coordinate for the G54 workspace to one inch below its current position (since I know my touchplate is 1" thick). I set my X and Y somewhere else, not using a probe. [You want to look at Shapeoko CNC Router, Rigid, Accurate, Reliable, and Affordable for the g10 documentation. Be prepared to cry/laugh; gcode pays no attention to any sort of sensible software design.]
g54 use the G54 workspace
g1 z.1 move up one tenth of an inch off the touchplate
g21 switch back to real measurements (aka metric).
I think the a problem you have is that you’re adjusting your machine coordinates. Those shouldn’t change; you should adjust a workspace instead.
Ok got it fixed by finding a faulty ground in the clip end that goes to my bit. Auto z zero now works. Do I need a 4th line of code to bring it to true z zero or will it just know where it is because of the zeroing process
