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Code M01-0135: Too many active axes per sys

Issue Description & Safety Warning

The Mitsubishi M800/M80 CNC has triggered a critical Too many active axes per sys 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 High-accuracy control has bee n executed in a part system which has 9 or more enabled control axes, except for a slave or synchronized axis. Remedy  Reduce the number of enabled control axes (except fo r a slave axis and synchronized axis) of the part system to 8 or less through synchronous control, c ontrol axis synchronization between part systems, or mixed control before executing high-accuracy control. Pre-intrpl variable accel err 0136 Details  The parameter "#12060 VblAccPreInt" (Variable-acceleration pre-interpolation acceleration/deceleration ON) is set to "1" and the parameter "#8090 SSS ON" is set to "0". Remedy  To enable the variable acceleration pre-interpolation acceleration/deceleration, set the parameter "#8090 SSS ON" to "1". To disable the variable acceleration pre-interpolation acceleration/deceleration, set the parameter "#12060 VblAccPreInt" to "0". Unable to star t automatic mode 0137 Details  Although start of automatic oper ation is not allowed after a machine groupwise alarm stop ("#1472 mgralmrestart"=0), start of aut omatic operation has been attempted after the said alarm stop.  The cycle operation is started with the guide bushing spindle synchronizati on related spindle is not being set.  The cycle operation is start ed while the "G/B spindle synchronization : temporary cancel" signal is turned ON. Remedy  Remove the cause of the stop by alarm.  Set the parameter "#1472 mgralmrestart" (Allowing au tomatic operation to start after machine groupwise alarm stop) to "1".  Check the parameter "#3074 GBsp".  Turning OFF the "G/B spindle synchronization: tem porary cancel" signal before starting the cycle opera- tion. Tool data sorting in progress 0138 Details Cycle start or graphic check has been attempte d during sorting of tool management data. Remedy  Execute cycle start after the tool data sorting is completed.  Execute graphic check after the tool data sorting is completed. Tolerance control invalid 0139 Details The parameter "#12066 Tolerance ctrl ON" is set to "1", although "#8090 SSS ON" is "0". Remedy  To enable the tolerance control, set "#8090 SSS ON" to "1". To disable the tolerance control, set "#12066 Tolerance ctrl ON" to "0". Ill manualmode select in 3Dcnv 0145 Details The following unselectable manual mode was selected during 3-dimensional coordinate conversion.  manual reference position return Remedy  Cancel the 3-dimensional coordinate conversion modal. Start err in PRM rot manu feed 0146 Details Axis start has been attempted with an y of the following operations while the coordinate rotation by parameter for manual feed is enabled.  Tool retract and return  Manual tool length measurement  Manual skip Remedy  Turn OFF the "Coordinate rotation by parameter: Coordinate switch for manual feed" 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 M01-0135 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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