Code 230-007A: One or more axes do not reach the control window in
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical One or more axes do not reach the control window in 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
channel %2 [Cause of error] At program start and during an exact stop, all axes must be in the control window.One or more axes of this channel has not fulfilled this condition. [Error correction] Check the configuration data CfgControllerTol->posTolerance and CfgControllerTol->timePosOK. Adapt the configuration data to the conditions of the machine.
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 230-007A 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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