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Code M01-0103: External feed rate zero

Issue Description & Safety Warning

The Mitsubishi M800/M80 CNC has triggered a critical External feed rate zero 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 [External feed rate zero] The MANUAL FEEDRATE switch on the machine operation panel is set to zero when the machine is in the jog mode or automatic dry run mode. The "Manual feedrate B speed" signal is set to zero du ring the jog mode when Manual feedrate B is valid. The "Each axis manual feedrate B speed" is set to zero during the jog mode when Ea ch axis manual feedrate B is valid. [Aux ax feedrate 0] The feedrate set in the oper ation parameter is zero. Or the override is enabled but is set to zero. Remedy [External feed rate zero]  Set the MANUAL FEEDRATE switch to a value other than "0" to release the error.  If the MANUAL FEEDRATE switch has been set to a value other than "0" check for any short circuit in the signal line.  Correct the sequence program. [Aux ax feedrate 0]  Set a value other than zero in the feedrate setting or override value. F 1-digit feed rate zero 0104 Details The F1-digit feedrate has been set to "0" when the F1-digit feed command was executed. Remedy  Set the F1-digit feedrate (the parameter "#1185 spd_F1" (F1 digit feedrate F1) to "#1189 spd_F5" (F1 digit feedrate F5)). Spindle stop 0105 Details The spindle stopped during the synchr onous feed/thread cutting command. Remedy  Rotate the spindle.  If the workpiece is not being cut, start dry run.  Check for any broken wire in the spindle encoder cable.  Check the connections for the spindle encoder connectors.  Check the spindle encoder pulse.  Correct the program. (commands and addresses) Handle feed ax No. illegal 0106 Details The axis, designated at handle fe ed, is out of specifications. No axis has been selected for handle feed. Multiple axes in a part system are allocated to a handle. Remedy  Check for any broken wires in the handle feed axis selection signal line.  Correct the sequence program.  Check the number of axes in the specifications.  Check the axis allocation to the handle. Spindle rotation speed over 0107 Details Spindle rotation speed exceeded the axis clamp speed during the thread cutting command. Remedy  Lower the commanded rotation speed. Fixed pnt mode feed ax illegal 0108 Details The axis, designated in the manual arbi trary feed, is out of specifications. The feedrate in manual arbitrary feed mode is illegal. Remedy  Check for any broken wires in the axis selection signal line or the feedrate line for the manual arbitrary feed mode.  Check the specifications for t he manual arbitrary feed mode. Block start interlock 0109 Details An interlock signal has been input to lock the block start. Remedy  Correct the sequence program. Cutting block start interlock 0110 Details An interlock signal has been input to lock the cutting block start. Remedy  Correct the sequence 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 M01-0103 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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