Over the past couple weeks I've noticed that occasionally when I'm probing something, the light showing the probe as active comes on when it makes contact, but the machine doesn't stop moving in that direction. This happened with increased frequency until yesterday, when it started happening every time. This happens when probing on any axis, not just Z.
I use Big Tex's probing screenset and also the ProbeIt wizard. Neither has been edited.
Yes, I have limit switches, and yes, they work correctly.
I have already gone over the entire wiring setup from start to finish. I replaced every piece of wire going to the probe, and made sure that the new wires are properly tinned and all terminal connections are tight. None of that was the problem. (I didn't expect it to be - the LED on screen lights up correctly, but the wires were a little ratty.)
I've already started a new profile from scratch, and it exhibits the same behavior.
I've already tried changing the probe to a different pin. Didn't help.
I have an ESS and G540, with a SuperPID spindle controller. Mach is version 3.043.062. XML file is attached.
If anyone has any suggestions to offer on this one, I'd be incredibly grateful.