Code 230-019D: Probe system not ready
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Probe system not ready 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] - Touch probe is not connected. - Battery in touch probe is dead. - No connection between infrared probe system and receiver unit. [Error correction] - Connect the touch probe. - Exchange the battery. - Clean the receiver unit. To be able to exchange the defective touch probe: 1. In the Manual operating mode, press the "touch probe monitoring" soft key. 2. Delete the error message. 3. Call another tool. Note: The touch probe monitoring is inactive until the next tool call or measuring operation. This means that the NC will not detect a collision with the touch probe!
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 230-019D 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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