Invalid auxiliary axis entry

What does 42F4 mean?

An auxiliary axis entry, where motion or configuration is expected, is found to be empty. This error suggests an incomplete or missing configuration for an auxiliary axis that is part of a kinematic group or coordinated motion, preventing the system from properly including it in calculations.

• A kinematic transformation expects a defined auxiliary axis at a specific index, but no axis is configured or assigned to that entry.
• An auxiliary axis was deleted from the system without updating the kinematic group's definition that referenced it.
• Partial configuration load or a corrupted project file where an auxiliary axis reference points to an empty or invalid slot.
• Manual configuration error, leaving an auxiliary axis entry blank or unassigned in the NC group setup despite being required.
• Mismatched software versions causing a discrepancy in how auxiliary axis entries are handled or validated by the NC runtime.

Click steps to track your progress.

1. 1

   1. Access the kinematic group configuration in the engineering software (e.g., TwinCAT System Manager).

2. 2

   2. Identify the specific auxiliary axis entry that is reported as invalid or empty within the group definition.

3. 3

   3. Either assign a valid auxiliary axis to that entry or remove the empty entry if it is not truly required for the kinematic transformation.

4. 4

   4. Verify that the total number of auxiliary axes configured in the group matches the requirements of the kinematic definition.

5. 5

   5. Recompile and download the entire NC configuration to the controller, then restart the NC task for the changes to take effect.