Code 700748: Error: Drive controller monitoring
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Error: Drive controller monitoring 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 machine control was switched off, but the drive module still signalled OK. PLC input signal "Drive control monitoring function" signals a (0) signal. (No fault) The plausibility monitoring of the "Drive control monitoring“ signal occurs about 3 seconds after the machine control is switched off. As long as the PLC input signal "Drive control monitoring" signals (0), the machine control cannot be switched on. When the machine control is switched off, this must signal a (1). 1. As soon as the PLC input signal "Drive control monitoring function" signals a (1) again, switch on the machine control with the [Control ON] key. 2. Press [RESET] key. 3. Message is cleared. Error messages Drives Error: Drive controller monitoring Signal state "Drive control monitoring": 0 = machine control switched on 1 = machine control switched off
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 700748 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.
Have a better solution?
Help the industrial community by sharing your repair experience for code 700748.
Need a searchable reference for more Chiron Siemens-Control CNC manuals?
We structure equipment manuals into searchable code, title, cause, solution, safety note, and source-reference data. Send a PDF and example searched codes when you need public pages, private search, or structured exports.
Space reserved for Google AdSense / Industrial Affiliate Links
Monetization target for 2026