Thanks Hood!
I appreciate the help.
The motors & etc are all set up. We model & cut in metrics here 99% of the time. I had been putting in the G21 into the code that isn't a problem... I want, as you clarified for me, Mach3 to start up in metrics each time. I'll look at this with your instructions and see what I can find. I agree, I think it is best to have the software always come up in the native settings. Again, Many Thanks!! Cas.
OK so do you want Mach to be native Inch or Metric? Will you be setting your motor tuning as Step per Inch or Step per mm? If you are wanting to set up the motors as Step per mm then do as Ed suggested. If however you want to keep the native units as inches but just run metric code you can do several things, first you ca have G21 at the start of your code or second you can go to config menu then General config, you will then see a box for Startup Modals, type G21 in that and Mach will always start in metric.
I think its best to have your machine set up in the native units you will use but its up to you.
Hood