Code 160-013A: Mid-program startup to area with active RTC function not
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Mid-program startup to area with active RTC function not 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
possible [Cause of error] You tried to run a mid-program startup on an area in the NC program in which the RTC function (Real-Time Coupling) is active. This is not possible. [Error correction] - Adapt the target position for the block search - Choose a target position so that the mid-program startup ends before activation of the RTC function.
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 160-013A 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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