Hey gang-
Been running my CNC router parts pro machine for ~ 10 years.
Having an issue today where the E stop keeps triggering (i have no estop its jumped). I cleared it a few times and restarted trying to finish my part.

It just triggered a minute ago in the middle of a cut (stayed triggered- leaving the emergency light flashing on the Mach3 diagnostics). I walked over to the G540 and the fault light was on. I could not clear the Estop in Mach3. Cycling the power on the conrol cabinet resolved the fault immediately.

I'm wondering if my G540 has an issue.

Is there a document somewhere that lists reasons this light could be on?

Attaching a few photos of the setup