Code 160-00BB: Faulty CFGREAD
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Faulty CFGREAD 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] Failed attempt to read a configuration datum via CFGREAD. The desired configuration datum may not exist or it has another type. [Error correction] Check that the name (TAG), key (KEY) and desired attribute (ATTR) is written correctly and that the desired datum has the correct type: In numerical formulas, enter only datum that can be converted to a numerical value (numbers and Boolean variables). In string formulas, enter only data that can be converted to a string (string, Boolean and enumeration).
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 160-00BB 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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