Code 603-0283: Tool positioned exactly on longitudinal cutting
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Tool positioned exactly on longitudinal cutting 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
limitation. Machining area cannot be determined. %1 [Cause of error] The control cannot recognize which side of the limit along the limiting contour to machine, because the tool is located exactly on the limiting axis. [Error correction] Position the tool longitudinally on the side of the cutting limitation to be machined.
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 603-0283 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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