Code 701747: End of paper filter
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical End of paper filter 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
There is probably no more fleece in the paperband filter. Sensor "Paperband filter available" for monitoring the amount of filter has responded. The PLC input signal "Paperband filter present" is not present. The error has the following effect as soon as the end of the machining program has been reached: Feed Stop No axis movements possible. "Spindle Stop" Tool spindle is stopped. Speed no longer possible. The 1st coolant pump, the 2nd coolant pump and the bed rinsing are then turned off. For MT series: Channel-specific "Read-in stop" after pulling bar call ( M450 ) or workpiece counting pulse ( M60 ) on this channel. The other channel, respectively, continues to run until the next tool change or rapid feed ( G0 ). The 1st coolant pump, the 2nd coolant pump and the bed rinsing are then turned off. 1. Check filter paper quantity. 2. Check the setting of the sensor "Paperband filter available" and the PLC input signal. 3. As soon as the malfunction is remedied, press one of the following keys: [FEED START] [CYCLE START] Message is cleared and the machining program can be continued.
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 701747 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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