The white LED button is used to pause the machine during a cut.
The VFD is setup from C3D and these buttons serve no function that I’m aware of.
This knurled knob and rail is for future add-ons such as a laser engraver module. J-Tec currently sells an aftermarket laser module that will attach here and maybe C3d is developing something of their own.
Does the pause button on the power pennant work like the pause button in CM? If I needed to step away from the machine for a few minutes (like run inside for a restroom break) could i hit the pause button on the power pennant, push the button on the VFD to turn off the spindle, then turn everything back on in reverse order to resume without any drama?