Two things that the Xcontroller firmware changed in default GRBL and this wouldn’t have out of the box:
- M7 output control. GRBL disables this by default.
- Safety Door enabled. This would change the behavior when you press the Pause/Feed Hold button on the front of the Xcontroller.
I’d test it out on mine but we’re slammed with holiday orders for our vinyl stuff and I can’t even get down to the basement to run the machine for things I need to get done.