Code P503-000: Illegal G110 axis
Issue Description & Safety Warning
The Mitsubishi M800/M80 CNC has triggered a critical Illegal G110 axis 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 Any of the following commands was given to an axis t hat is under the following conditions: Mixed control com- mand, Arbitrary axis exchange command, Arbitrary axis exchange return command or Basic axis configuration return command. The commanded axis does not exist. The command caused the maximum number of axes per part system to be exceeded. The command was given to an axis for which axis exchange is disabled. 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 P503-000 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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