Code 701446: Clamping fixture not selected
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Clamping fixture not selected 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
The function "With loader“ was switched on, but the respective clamping device has not yet been selected. Feed Stop Lamp "With loader" flashes. Activate the "Clamping device" function. "With loader" function only works once the clamping device has been activated. Monitoring the operating states with M functions In the machining program, the function M266 was output. This function monitors whether the clamping device is activated.
Source: CHIRON Error Message Overview, all series (Siemens control, V2.0.6, 2012)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Chiron Siemens-Control CNC Alarms
Chiron controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 701446 on the Siemens-Control CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Chiron's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 545 Chiron Siemens-Control CNC codes.
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