Code 250-13B8: Machine kinematic configuration has too many rotary axes
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Machine kinematic configuration has too many rotary axes 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] You have defined more than two axes as rotary axes. The working plane cannot be tilted with more that two rotary axes. Machine kinematics with more than two rotary axes are not supported by the control. [Error correction] - Change the machine configuration: Use a kinematic configuration with no more than 2 rotary axes.
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 250-13B8 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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