I can run the entire job no problem but when I close Mach 3 it gives me an error triggered. When I restart I have to Ref. all home each time. Any ideas what would cause this.

Hi,

When I restart I have to Ref. all home each time. Any ideas what would cause this.

That what you're supposed to do. When you first turn on the machine it does not know where it is, unless you direct
it to some repeatable and specific location (home).

Craig

But why the error triggered when I exit

Hi,
I'm only guessing but when Mach shuts down it saves its current position (machine and work coordinates)
and it sounds like it is not doing so thereby causing an error.

Craig