This morning I was making a tool change and raised the motor. When I did I hit the limit switch on the 'Z' going to the + side. I reset the switch, and nothing would work. No motors would move. I finally saw that the "offline" was lit. So I reset it. But now when I press "Go to Zero" the Z goes to the + and will not zero. I rebooted the computer, and tried all the normal things. I can move the three axis by jogging them and they move as they should. Is there a switch in Mach3 that needs to be reset?