Code 140-005F: Unknown file '%1' in update rule '%2'
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Unknown file '%1' in update rule '%2' alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
[Cause of error] - In the update rule, a file is given that is either nonexistent or is not listed in the list of configuration files. - You can find more information on the error message by pressing the INTERNAL INFO soft key. [Error correction] - The file does not exist or is not in the list of configuration files: - The control will automatically create a file and save the new data in the file. - If you do not want to use the new file, move the data to another one and delete the existing file from the list of configuration files. - Incorrect path or file name in the update rule: - Press the UPDATE RULES soft key, then check the update rule and correct it if necessary. - Configuration file exists, but is not in the list of configuration files: - Press the CONFIG FILE LIST soft key and add the file to the list. - Inform your service agency.
Source: HEIDENHAIN NC Error Messages — TNC7/640/620/320/128, CNC PILOT 640, MANUALplus 620 (10/2023)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Heidenhain TNC Series CNC Alarms
Heidenhain controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 140-005F on the TNC Series CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Heidenhain's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 4497 Heidenhain TNC Series CNC codes.
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