Okuma Alarm B-2466 – Unable to Issue M100 Command During Nose-R Compensation

Okuma Alarm B-2466 indicates that the M100 synchronization command cannot be executed during Nose-R compensation. This typically points to an incorrect or conflicting M-code setup within the machining program.

Meaning of the Alarm

This alarm occurs when the control system detects an invalid or improperly timed M100 command while Nose-R compensation is active. The machine cannot synchronize the operation as expected, which stops execution to prevent errors or damage.

Possible Causes

  • Incorrect placement of M100 command in the program

  • Conflict between Nose-R compensation and synchronization command

  • Invalid M-code configuration

  • Programming logic error

  • Control system misinterpretation due to sequence issues

Recommended Checks

  • Review the CNC program and verify the position of M100

  • Ensure that Nose-R compensation is properly configured

  • Check synchronization settings and M-code definitions

  • Compare with a working program if available

  • Test program execution step-by-step

When You Need Professional Repair

If the issue persists after correcting the program, the problem may be related to:

  • Control board or software malfunction

  • Signal processing issues

  • Internal system errors

👉 In this case, professional diagnostics are recommended.

Related Services

  • CNC diagnostics and troubleshooting

  • Control board repair

  • Okuma system inspection and testing

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