Quote Originally Posted by pip View Post
M6 works to tell the unit to change tool..knowing nothing about cnc doesn't help to the point it's nearly gone out for the scrap man..frustrating is an understatement..thank you.
I'm Setting aside all the Mach3 conversion etc Doddy mentions and assumes it's done correctly because of your getting motion.

If you are using the standard M6 macro then that's where your problem lies. To use an ATC you need a custom M6 macro with all the relevant details like, number of tools, rotation degree's and any I/O it's using to sense position etc that relate to your machine. Without it nothing will happen because Mach3 knows nothing about your ATC.

If you have an ATC M6 Macro then have you turned on ATC in general config (top left coner).? It could be set to ignore tool change.!