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Press the OFFSET key and navigate to the tool data management screen to identify which tool triggered the alarm.

Check the tool size parameters L (Length), R (Radius), T (Top), and B (Bottom) for the active or recently programmed tool number.

Correct any size values to be within the range of 1 to 7. Reference your machine's tool magazine documentation for proper size classification.

Ensure the corrected size values match the physical tool dimensions and magazine pocket capabilities to avoid collisions.

Save the corrected tool data and reset the alarm. Test with a dry run or single block execution before resuming normal operation.

Navigate to the magazine management screen and review the magazine configuration parameters for all occupied pockets.

Identify any tool locations showing size parameters of 0, negative values, or values greater than 7.

Correct the magazine location data by assigning proper size values (1-7) based on your machine's tool classification system.

Verify that tool sizes match physical magazine pocket sizes to prevent tool changer malfunctions.

Perform a magazine inventory check or reference point approach for the tool changer to validate the corrections.

Review recent tool data import operations or tool list uploads that occurred before the alarm appeared.

Export the current tool data to CSV format and inspect the L, R, T, and B columns for invalid entries using a text editor or spreadsheet.

Correct the tool data file format, ensuring all size parameters are integers from 1 to 7, then re-import the corrected file.

Always create a backup of existing tool data before importing new tool lists.

Alternatively, manually re-enter the tool size data through the HMI if the imported file is extensively corrupted.