Code 125-014B: Kinematic model was not switched over
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Kinematic model was not switched over 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] The kinematic model was not selected. Possible causes: - An NC program is being run - Tilting of the working plane is active (3D ROT soft key, PLANE function, Cycle 19) - The kinematic model is faulty [Error correction] - Switch the kinematics again after program run - Deactivate the "Tilt Working Plane" function: - Use the 3D ROT soft key to set manual tilting to inactive, or - Use the PLANE function or Cycle 19 to deactivate tilting under program control - 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 125-014B 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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