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Enter commissioning mode and navigate to Settings → Machine Data → Channel-specific MD → Basic Machine → MD1104 (AXCONF_MACHAX_NAME_TAB).

Check all axis names for duplicates or invalid characters. Valid names are typically X, Y, Z, A, B, C, U, V, W, or Q1-Q9. Ensure no two axes share the same identifier.

Similarly check MD1118 (AXCONF_GEOAX_NAME_TAB) for geometry axis names and ensure they correspond correctly to the machine axes without conflicts.

Correct any duplicate or invalid names, save the machine data, perform a power-on reset (NCK reset), and verify the alarm is cleared.

CAUTION: Changing axis names may affect existing part programs. Document all changes and verify program compatibility.

Check MD1000 (NUMBER_OF_AXES) to verify the total number of axes configured for the channel.

Compare this count with the number of valid entries in MD1104 and MD1118. Ensure all axes from 1 to the number specified in MD1000 have valid names assigned.

If there are empty or undefined entries in the middle of the axis name arrays, either assign valid names or adjust MD1000 to reflect the actual axis count.

Save changes, perform NCK reset, and verify system boots without the alarm.

WARNING: Reducing MD1000 value will disable axes. Ensure this matches your machine configuration.

If this alarm appeared after a backup restore or system update, check the backup compatibility with your NCU software version and hardware configuration.

Navigate to Commissioning → System Data → Compare and verify the integrity of axis-related machine data against a known good backup or factory settings.

If corruption is suspected, manually re-enter the correct axis names in MD1104 and MD1118 based on your machine documentation or a verified backup printout.

CRITICAL: Document current settings before making changes. Incorrect axis configuration can cause dangerous machine behavior.

After correction, create a new verified backup, perform NCK reset, and run a test program in single-block mode to verify proper axis operation.