Request for Reference Position Return

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This alarm typically indicates that an operation requiring the machine to be at its reference (home) position was initiated before the reference return cycle was completed. It serves as a reminder or pre-alarm that homing is required.

• Attempting to run an automatic program or move an axis in absolute coordinates before homing.
• Power cycling the machine without re-establishing reference positions.
• Machine parameters requiring explicit homing after certain events.
• Loss of absolute position data due to battery failure or encoder issues (leading to a need for homing).

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1. 1

   Perform the reference position return (homing) procedure for all axes as per the machine's operational manual.

2. 2

   Verify that the machine's battery for absolute encoders is healthy if the machine requires homing after every power cycle.

3. 3

   Check if any recent parameter changes might have disabled automatic homing or altered homing requirements.

4. 4

   Confirm that the absolute position data is retained after power off; if not, investigate the battery backup system or absolute encoder.

5. 5

   Ensure the machine's control mode is set correctly for homing operation.