Page Comparison

...

1. From the PathPilot interface, on the Status tab, examine the axes' Limits LEDs.

   1. If one or more of the status lights are illuminated, try Disable the Limit Switches (Stuck on a Limit Switch) first.

   2. If all of the status lights are off, continue to the next step.

2. From the PathPilot interface, on the Settings tab, verify that the Enclosure Door Switch setting matches the hardware on your machine.
   The installation of the door requires modifying the limit switch wiring, which can cause issues if not correctly set in PathPilot.

3. Locate the physical switches on the machine and manually activate them while watching the LEDs in PathPilot.

   1. If the switches illuminate their respective status light, they are working; inspect the limit switch flags. (X and Y share a limit switch LED)

   2. If a status light stays on even when the switch isn’t depressed, continue to the next step.

4. If no switch is depressed, and the Z limit switch LED is still on, continue onto the next step. If the X and Y LED is illuminated, then power down the machine. Start with either the X or Y switch. Take a picture for future reference, and then remove the wires with a screwdriver. Jumper both wires of the switch together. Look for a status change once the machine is booted back up.

5. Locate the malfunctioning limit switch, take a picture for future reference, and then remove the wires with a screwdriver.

6. With the switch in its normal state (not depressed), measure the resistance across the switches NC (normally closed) and C (common) terminals with digital multimeter set to resistance.

   1. If the digital multimeter reads OL, shows a resistance in the MΩ, and/or doesn’t produce continuity tone, replace the switch.

   2. If the switch measure 0-5 Ω, continue to the next step.

7. With the switch depressed, measure the resistance across the switches NC (normally closed) and C (common) terminals with digital multimeter set to resistance.

   1. If the switch measure 0-5 Ω, replace the switch.

   2. If the digital multimeter reads OL, shows a resistance in the MΩ, and/or doesn’t produce continuity tone, reinstall the switch.

8. Inspect the wiring on the malfunctioning switch for loose ferrules, terminal connections, fraying, or broken line.

...

1. Jog the machine to its reference position.

2. From the PathPilot interface, on the Settings tab, clear the Limit Switches checkbox. Then, on the dialog box, select OK.

3. Push in the Emergency Stop button on the operator box.

4. Adjust the limit switch flag so you just hear the limit switch click.

5. Take the machine our out of Emergency Stop, press the Reset button, and from the PathPilot interface, select Reset. Then jog the machine off of the limit switch.

6. From the PathPilot interface, on the Settings tab, select the Limit Switches checkbox to re-enable the limit switches and then reference the axes.
   If the machine crashes again before triggering the limit switch, repeat Steps 2 through 6.