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Examine the Z-Axis Limit Switch

ClosedOverview/Background Information

If you want background information on this problem, go to How Limit Switch Power is Controlled.

ClosedWhat Steps Have I Already Taken?

You've determined that:

  • The machine has a shorted limit switch circuit

Follow the Troubleshooting Steps to determine the cause of the shorted limit switch circuit.

Before You Begin

If you haven't yet done so:

  1. Twist out the emergency stop button on the operator panel which enables movement of the machine axes and the spindle.

  2. Press the start button on the operator panel.

  3. On the machine column, locate the Z-axis limit switch.

Troubleshooting Steps

  1. With one finger, press and hold the Z-axis limit switch.

  2. From the PathPilot® interface, on the Status tab, locate the Z Limit light.

Is the Z Limit light on?

  • Yes: This means that the problem is probably an incorrectly adjusted limit switch. Adjust the limit switch, and repeat the troubleshooting steps — go to Machine Won't Reference.
  • No: Go to Remove Wire J2-3.