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Code M01-0186: Invalid axis configuration

Issue Description & Safety Warning

The Mitsubishi M800/M80 CNC has triggered a critical Invalid axis configuration 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 operation you input cannot be executed under the axis configurat ion of the part system.  3D manual feed was attempted.  The rotation center error compensation has been turned ON.  The rotary axis is set to the spindle mode of the spindle position control.  An unavailable function command was given when "Selec t specifications of rotation direction parameter" is enabled (#1450/bit3: 1), and the left-hand screw dire ction is selected by the rotation direction parameter (#7923, #7933, #7943, #7953: 1). Remedy  Check the rotary axis configuration parameters.  Correct the axis configur ation of the part system.  Reset the NC or remove the error cause to cancel the alarm. Rotary axis para unswitchable 0187 Details The rotary axis configuration paramet er switch request signal has turned ON for a part system where any of the following modes is active.  Tool center point control mode  Inclined surface machining mode  Workpiece installation error compensation mode  Tool axis direction tool length compensation mode  Simple inclined surface machining mode  3D radius compensation mode  3D manual feed  Tool handle feed & interruption  R-Navi mode Remedy  Cancel the alarm by NC reset or by turning OFF the rotary axis configuration parameter switch request signal. Interference check disabled 0200 Details 3D machine interference check is disabled. This alarm is output to NC alarm 5. Remedy  Enable all the interference check settings.  If there is any axis which has not completed zero point return, establish the zero point first. Machine interference 1 0201 Details It was judged that an interference occurred in the No.1 step interference check and caused a deceleration stop. When machine interference is detected, the interfered part is highlighted (y ellow/red) and the part's name is displayed on the 3D monitor's model display. Remedy  Move the axis in a direction which does not cause interference.  Press RESET to cancel the alarm.  (In manual operation) You can move the axis in the same trav el direction as before the interference. But the axis movement is done using t he 2nd step interference check distance. Machine interference 2 0202 Details It was judged that an interference occurred in the No.2 step interference check and caused a deceleration stop. When machine interference is detected, the interfered par t is highlighted (red) and the part's name is displayed on the 3D monitor's model display. Remedy  Move the axis in a direction wh ich doesn't cause interference.  Press RESET to cancel the alarm. Tool interfere. check disabled 0205 Details Tool interference check has been disabled. This alarm is output to the NC alarm 5. Remedy  Turn ON the [Tool check] menu of 3D monitor.  Set the tool data.  If you prevent an alarm from being ou tput while the tool interference ch eck is disabled, set "0" in "#11100 3D_MChk_ToolAlm".

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 M01-0186 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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