Code M01-0118: Turn stop in normal line cntrl
Issue Description & Safety Warning
The Mitsubishi M800/M80 CNC has triggered a critical Turn stop in normal line cntrl 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 The turning angle at the block joint exceeded the limit during normal line control. In normal line control type I: The parameter "#1523 C_feed" (Normal line cont rol axis turning speed) has not been set. In normal line control type II: When turning in the inside of the arc, the set value for the parameter "#8041 C-rot. R" is larger than the arc radius. Remedy Correct the program. Correct the parameter "#1523 C_feed" (Normal line control axis turning speed) setting. Correct the parameter "#8041 C-rot. R" setting.
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 M01-0118 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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