I tried it with the tool near the table and no luck.
How can I test for noise?
I am using an alligator clip on the cutter and an insulated plate.

If I just let it run it will run all the way up to the home switch.

You could try replacing the auto zero button script with this very, cut down code and see if the problem still persists.

Message( "Auto Zeroing..." )
If IsSuchSignal (22) Then
code "G31 Z-3 F10"
While IsMoving()
Wend
Call SetDRO( 2, .180 )
code "G1 Z1"
End If


Tweakie.

Thanks Tweakie,  I tried that same code last night,  I even edited the G31 Z-3 F10 to Z+3 in hopes of tricking it into moving down.
I just opened up the script under the button and changed it then saved it.  That didn't work either.

Try what I said earlier. Create a new profile from scratch. All you need to set up is the Z axis and digitize input, to see if it works.

Just two things spring to mind

1) check that the script box is completely empty before entering new script.
2) zero the z axis DRO before pressing the auto zero button.

( grasping a t straws here now   )

Tweakie.

Yeah, I tried both of those.  Thanks for the help Tweakie,  I'll keep screwing with it... funny how it always seems to come down to process of elimination right?
Would it be ok to start a new thread on this in hopes of someone that had a similar problem picking it up?  I kind of piggybacked my issue on someone else's thread.

Ok, I'll give that a shot this evening.  What is the best way to do that?  When I bought the mill the guy before me set up the mill and gave me his xml.
Do I do that in the dialogue that pops up as soon as I double click Mach3 Loader where I click Create Profile? and do I clone it from my Taig .xml?

Don't clone anything. Just click Create Profile, and create a new one from scratch.

I created a new .xml and ran the macro, it still moves in a positive direction and stops at 1.00 from I started it.