Hi I am new to CNC but have found what I think is a bug. I did not set the Z axis limit height when using demo code (My lack of knowledge) . This caused my machine to hit the high Z limit and lock the machine (As expected). But gSender still sent the gCode to the machine, this caused the machine to plunge the full depth into the work piece when I reset the lockout via the gSender software . I think it should stop sending the gCode when a limit is triggered.
Kevin. You didn’t specify your machine. Altmill? If so, try adjusting the Z sensor. Make sure the red light on sensor is on when Z is raised up. Rehome the machine.