Code 701541: Check loader selection (key switch)
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Check loader selection (key switch) 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 key switch "With loader" was switched off, but the "Loader" function is still active. To prevent accidental deactivation of the "with loader“ function, deselection is only conditionally permitted. (See note) This message is only a note indicating that the "with loader“ function is still active, although the key switch has been switched off. Either deselect the "with loader“ operating mode correctly, or select it again. "With loader" function can be correctly deactivated with the "With loader" key switch in manual mode and [Key-operated switch "Input“ position [1-3]
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 701541 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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