Code P484-000: R-pnt ret incomplete (mill)
Issue Description & Safety Warning
The Mitsubishi M800/M80 CNC has triggered a critical R-pnt ret incomplete (mill) 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 Movement was commanded to an axis that had not completed reference position return during the milling mode. Movement was commanded to an axis that had not comp leted reference position return during cylindrical interpolation or polar coordinate interpolation. Remedy Carry out manual reference position return. Illegal modal (mill)
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 P484-000 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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