Code 701704: Check limit switch tool pocket vacant 4
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Check limit switch tool pocket vacant 4 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
Tool changing was terminated, but it was established that the PLC input signal magazine place free 4 was active during the entire changing operation. During the tool change, the switch is monitored for a signal change from (1) to (0). Feed Stop after ending the tool change. The program should be interrupted. 1. Check the setting of the ultrasound sensor according to the setting instructions. NOTICE! Adjustment should only be carried out by trained and instructed personnel. 2. Check PLC input signal "Magazine place free 4" of the corresponding spindle. 3. As soon as the malfunction has been remedied, switch to "Manual mode" and press the [RESET] key. Message is cleared. Error messages Tool change Check limit switch tool pocket vacant 4
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 701704 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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