Over travel lite up on screen but no limit switch activated

[dhb9mm@gmail.com]

I am running uccnc software with uc300eth, C95 board, pup no proximity switches for my limit switches. The machine has been running g great like this for about a yr. This morning the over travel light is on but nothing is even close to a sensor. I can take piece of metal and put in front of each sensor, and the red-light on the sensor will come on, and then go off when I move it away.

Could I have one bad sensor that is causing it to throw all of them? Or has my controler, or my break out board gone bad?

David

[cncdrive]

Try to disconnect the sensors from the board and check if the problem still happens?
If nort then it could be a broken sensor or it's wire is broken.