140-004F

Wait for automatic completion

Allow 2-5 minutes for the control to complete the configuration update process. The alarm should clear automatically once all data structures are synchronized with the new software version.

Do not power off the control during this process as it may corrupt configuration data and require complete parameter restoration.

Verify software version consistency

Press MOD key, navigate to System Information, and verify that NC Software, PLC, and all firmware versions are consistent and match the intended update package. Inconsistent versions indicate incomplete update.

Compare displayed versions against the update documentation - TNC controls require all components (NC kernel, PLC, and drive firmware) to be compatible versions.

Check configuration backup status

Navigate to MOD > Backup/Restore and verify that machine parameters were properly backed up before the update. If alarm persists after reboot, restore from the pre-update backup.

Always create a full backup including machine parameters (MP), PLC program, and tool tables before any software update on Heidenhain controls.

Review update log files

Access MOD > System Files > logfiles directory and examine 'update.log' or 'boot.log' files for specific error messages related to configuration data conversion or writing failures.

Look for entries containing 'CONFIG', 'EEPROM', or 'NVRAM' which indicate the specific configuration component being updated.

Identify changed parameters

Access MOD > Machine Parameters and review the parameter history or compare current values against your documented baseline configuration to identify what was recently changed.

TNC controls maintain a modification flag for changed MPs - parameters requiring reboot or configuration update are typically marked with a special indicator.

Perform controlled restart

Exit to control startup screen and perform a controlled restart (not emergency power-off) to allow the system to complete writing the new configuration data to EEPROM during the boot sequence.

Ensure no ongoing machining operations or unsaved part programs before restarting the control.

Verify parameter storage completion

After restart, return to MOD > Machine Parameters and verify that modified parameters no longer show a 'pending' or 'requires restart' indicator, confirming successful storage.

Critical MPs affecting axis configuration (CfgAxisList, encoder assignment, drive parameters) always require configuration update and system restart to take effect.

Check available storage

Press MOD key, select System Information, and view the available space on the system drive (typically TNC:\ or CF card). Minimum 100 MB free space is recommended for configuration operations.

TNC controls with less than 50 MB free space may experience configuration write failures and potential data corruption.

Clean up unnecessary files

Navigate to file manager (PGM MGT key) and delete old backup files, obsolete part programs, or large log files from TNC:\logfiles directory to free up storage space.

Configuration update creates temporary files typically 5-20 MB in size - ensure adequate headroom beyond the minimum free space requirement.

Move programs to network storage

Transfer large NC programs or seldom-used files to network storage locations (mapped drives) rather than keeping them on the internal CF card or SSD.

Use TNC:\programs directory for active jobs only; archive completed programs to external network paths configured in MOD > Network Settings.

Retry configuration update

After freeing storage space, perform a controlled restart to allow the system to retry the configuration update process with adequate storage available.

If alarm clears after restart with more free space, establish a policy to maintain at least 200 MB free space on TNC system drives.