Code M01-1004: Superimposition command illegal
Issue Description & Safety Warning
The Mitsubishi M800/M80 CNC has triggered a critical Superimposition command illegal 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 Superimposition start command was issued to the ax is which was in any of the following states. Synchronization control Milling interpolation Feed-forward thread cutting control Superimposition start command was issued to the axis which was under superimposition control. Superimposition start command was issued to an axis that belongs to t he same part system as a reference or synchronized axis of control ax is synchronization between part systems. Remedy Correct the program. Turn OFF the feed-forward control request signal.
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 M01-1004 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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