Code 700128: No working area recognition
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical No working area recognition 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
On switching on, the control has not recognised the corresponding work area. No program start is possible. 1. Switch to manual mode. 2. Move the machine into one of the work areas and activate the option again. 3. If the error message still appears, the work area cam inputs must be checked. Work area recognition is made on option "Pendulum working" or "Program numbers selection" being switched on. If this fault appears, care must be taken that on switching the options or the installation on, the machine is either in "left" or "right" work area.
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 700128 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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