Measuring axis not in basic/intended position

What does 61429 mean?

A measuring axis (rotary axis 1 or 2) is not in its basic or intended position, particularly during the first measurement operation. The error code A specifically indicates that rotary axis 1 is not in its basic position. This fault prevents accurate measurements from being performed.

• The rotary measuring axis (e.g., C-axis on a turning machine) has not been homed or referenced to its zero position.
• Encoder feedback for the measuring axis is lost or incorrect (e.g., cable damage, encoder fault, incorrect parameter P2043 for encoder type).
• Mechanical slip or backlash in the rotary axis drive train, causing a discrepancy between commanded and actual position.
• Machine data for the rotary axis home position or limits (e.g., MD34000 to MD34005) is incorrectly set.
• External forces or collision preventing the axis from reaching its intended measuring position.

Click steps to track your progress.

1. 1

   1. Manually jog the affected rotary measuring axis (e.g., C-axis) to its reference point and perform a homing/referencing procedure (e.g., G74 or specific machine function).

2. 2

   2. Verify the integrity of the encoder cable for the measuring axis, checking for continuity and shielding effectiveness, and inspect the encoder feedback at the drive.

3. 3

   3. Check the drive parameters for the rotary axis, specifically P2043 (Encoder type) and P2044 (Encoder resolution), ensuring they match the installed encoder.

4. 4

   4. Observe the actual position feedback (r0030) of the rotary axis, comparing it to the commanded position, and check for any mechanical play or backlash.

5. 5

   5. Review machine data related to the rotary axis's home position and software limits (e.g., MD34000, MD34001) for correct configuration.