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I’m still stumbling my way through learning Mach4 after using Mach3 for 10 years. I’m starting to understand it better but could use some simple help.

I was able to get the Go To Work Zero button working after some research. I had to remove the A Axis from the script since I only have a 3 axis machine and I added in the Z because I like to see that all three are going to zero.
mc.mcCntlMdiExecute(inst, "G00 X0 Y0 Z0")

That works great but I always get worried watching this machine scream to zero all at the same time.

I decided to watch the Newfangled video on changing the script and did what he showed in the video
https://www.youtube.com/watch?v=SZuE...el=MachSupport

mc.mcCntlMdiExecute(inst, "G00 G53 Z0\nG00 X0 Y0\nG00 Z0")--With Z moves

and I did this. I think I added in a Z0 though at the X0 Y0 though because it immediately buried the bit in the spoilboard as it went to work zero. With the servos and settings I have this happened in the blink of an eye and I couldn’t hit the estop fast enough lol

What I would love it to do is first move the Z axis to machine coordinates of 5.5”, second, bring the X & Y to the work zero and lastly bring the Z down to the work Z zero and I’d rather not kill anything else in my trial and error of writing this script so anyone with the correct script I would be very grateful.

[joeavaerage]

Hi,
there are posts on the Mach4 general Discussion board that deal with that.

It was a game move to include a move that causes the Z axis to descend into the work zone. If there is even a small error in your setting you
risk driving you spindle into whatever is down there, vice....spoil board...your hand. There is a reason that NFS did not include such a move.

Craig

[joeavaerage]

Hi,

mc.mcCntlMdiExecute(inst, "G00 G53 Z0\nG00 X0 Y0\nG00 Z0")--With Z moves

Note the first part G00 G53 Z0\n...the G53 means that the move is Machine Coordinates. So the move goes to machine zero in the Z axis at rapid traverse (G00) speed.

Where is your machine coordinate for the Z axis. Most machines have the machine z=0 right at the very top of travel, out of harms way. Thus the move that the complete line does is
first 'Go to the very top of the Z axis, then the next line (after the \n) says go to work x=0 and work y=0, then the last line (after the second \n) says go to work z=0 at rapid traverse speed (G0)......which is down into the
work envelope. Are you sure you want to do this....your driving the Z axis down into trouble?

Craig