Code P501-000: Cross (G110) impossible
Issue Description & Safety Warning
The Mitsubishi M800/M80 CNC has triggered a critical Cross (G110) impossible 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 Mixed control command (G110), Arbitrary axis exchang e command (G140), Arbitrary axis exchange return command (G141) or Base axis configuration restore command (G142) has been given to a part system that is under any of the following state. Cylindrical interpolation mode Polar coordinate interpolation mode Milling interpolation mode Constant surface speed control mode Polygon cut mode Hob machining mode Nose R compensation mode Tool radius compensation mode During axis name switch Fixed cycle for drilling Fixed cycle for lathe turning Compound-type fixed cycle mode Special fixed cycle mode Facing turret mirror image mode Balance cut mode Chuck barrier/Tailstock barrier Stroke check before travel During Macro modal call (G66.1) Hypothetical axis interpolation mode Figure rotation mode During scaling Coordinate rotation by parameter mode Polar coordinate command mode Normal line control mode Circular cutting mode Tool direction tool length compensation mode Remedy Correct the program.
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 P501-000 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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