I did something, but I don't know what. Yesterday when I was messing with my Pro2448 all was well. If I hit an end stop Mach 3 read it and stopped travel as it should. Today, not so well. I'm setting machine zero and when I go to and end stop, the light on the sensor lights up as it should but Mach 3 ignores it. Obviously I changed something someplace but I don't know what. Any ideas?