Code 701542: Safety fence not closed (loader)
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Safety fence not closed (loader) 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“ has been switched on but the safety fence of the loader is not closed. PLC input signal "Safety fence closed“ is not present. The drives on the machine are switched off. It is impossible to operate the machine. 1. Check the safety fence of the loader and close. 2. Check PLC input signal "Safety fence closed". 3. Once the safety fence is closed, press the [FEED START] or [CYCLE START] key. Message is cleared and the drives are activated again. Error messages Automation Safety fence not closed (loader)
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 701542 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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