Code M01-1014: GB spindle synchro signal OFF
Issue Description & Safety Warning
The Mitsubishi M800/M80 CNC has triggered a critical GB spindle synchro signal OFF 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
Details A forward run, reverse run, orientation, synchronous tapping, spindle synchroni zation, tool spindle syn- chronization I, tool spindle synchronization II or C- axis servo ON command was issued to the reference spindle while the guide bushing spindle synchronization signal was OFF. The guide bushing spindle synchronization signal was turned OFF during a forward run, reverse run, ori- entation, synchronous tapping, spindle synchronization, t ool spindle synchronization I, tool spindle synchro- nization II or C-axis servo ON command. Orientation was commanded during the "guide bushing spindle synchronization" signal ON with spindle zero point detection with proximit y switch and turret indexing enabled. C axis servo ON was commanded during the "guide bushing spindle synchronization" signal ON with spin- dle C axis parameter change enabled. Remedy Check the ladder program. Check the parameters. GB SP sync:Spindle type error 1015 Details An analog spindle is used for the master spindle or the guide bushing spindle. Spindle-mode servo is used for the master spindle or the guide bushing spindle. Turret gear change control valid spindle is used for the master spindle or the guide bushing spindle. Remedy Check the parameters. Change the reference spindle or the guide bushing spindle to spindle drive unit. Change the reference spindle or the guide bushin g spindle to turret gear change control invalid. GB SP sync:Phase mem sgnl ilgl 1021 Details The guide bushing spindle synchronization phase memory signal was turned ON while the master spindle or guide bushing spindle was rotating. The guide bushing spindle synchronization phase memory signal was turned ON while the guide bushing spindle synchronization signal was OFF. Remedy Check the ladder program. GB SP sync:Phase set sgnl ilgl 1022 Details The guide bushing spindle synchronization phase alignment signal was turned ON while the master spin- dle or guide bushing spindle was stopped. Remedy Check the ladder program. GB SP sync:Z phase not pass 1023 Details When the guide bushing spindle synchronization phase memory signal was ON, the master spindle or guide bushing spindle’s Z-phase was not passed. Remedy Check the ladder program. Cmnd impsbl in spindle rtry ax 1024 Details Toward the synchronous tapping spindle, the switch to servo-mode is commanded to the spindle-mode rotary axis. The spindle-mode rotary axis in servo-mode is commanded as the synchronous tapping spindle. Remedy Switch to the spindle-mode rotary axis. Other cmnd disabled in orient. 1025 Details Spindle superimposition control command has been gi ven to an orientation mode spindle with the said spindle treated as either the reference or superimposed spindle. Orientation command has been given to the reference or superimposed spindle that is under spindle su- perimposition control. Remedy Cancel the orientation mode. Use G113 or the "Spindle sync cancel" signal to cancel spindle superimposition.
Source: Mitsubishi M800/M80/E80 Series Alarm/Parameter Manual (IB-1501279)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Mitsubishi M800/M80 CNC Alarms
Mitsubishi controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code M01-1014 on the M800/M80 CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Mitsubishi's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 722 Mitsubishi M800/M80 CNC codes.
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