A Limit switch (or "Home switch"), is a normally closed switch, which means that when nothing is pushing on them they report being "on". If a wire is broken or a connector is disconnected, the controller will think that the machine is at the end of travel, and will bring the machine to a halt.

Part numbers and images

The image to the right shows the various kinds of switches we use, and the part numbers associated with them.

Troubleshooting

To troubleshoot a limit switch problem, consult the Limit switch troubleshooting section