Code 230-0112: RTC coupling programmed with active DCM. Deactivate
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical RTC coupling programmed with active DCM. Deactivate 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
DCM? [Cause of error] During active DCM collision monitoring you started a realtime coupling function (RTC). Caution: DCM must be deactivated! [Error correction] Press NC start to confirm deactivation of DCM and continue editing the program
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 230-0112 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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