Code 603-0301: Insufficient memory for individual contour areas.
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Insufficient memory for individual contour areas. 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
Cycle cannot be executed. Reduce machining area. %1 [Cause of error] The limiting contour switches so often with the workpiece contour that the individual limiting contour areas cannot be saved in the contour list. [Error correction] Reduce the machining area and try again. 10/2023 [1221]
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 603-0301 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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