Code 280-04A2: Tooth width RCUTS is defined too large
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Tooth width RCUTS is defined too large 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 tooth width RCUTS is defined too large for helical or reciprocating plunging in cycles 251 to 254. [Error correction] For helical or reciprocating plunging the tooth width must be less than the tool radius Correct the value for tooth width RCUTS in the tool table. 10/2023 [911]
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 280-04A2 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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