Okuma Alarm B-2424 – Multi-Machining Cycle (G185–G188) Used in G94 Mode

Okuma Alarm B-2424 indicates that multi-machining cycle commands (G185–G188) are being executed while the machine is set to G94 feedrate mode (feedrate in mm/min). These cycles require a different feed mode for correct operation.

Meaning of the Alarm

This alarm occurs when the control system detects that thread cutting cycles (G185–G188) are used in G94 mode. These cycles are not compatible with feedrate per minute and require the correct feed mode to function properly.

Possible Causes

  • Multi-machining cycle commands used in G94 mode

  • Incorrect feedrate mode selection

  • CNC program configuration error

  • Improper setup of thread cutting cycles

  • Incorrect machining parameters

Recommended Checks

  • Verify the active feedrate mode before executing G185–G188

  • Ensure the correct feed mode is selected for thread cutting cycles

  • Review CNC program structure and command sequence

  • Check machining parameters and cycle configuration

  • Test program execution step-by-step

When Professional Service Is Required

If the alarm persists after correcting the feedrate mode and program settings, the issue may be related to control system configuration or deeper setup problems. In such cases, professional diagnostics are recommended.

Related Solutions

  • CNC diagnostics and troubleshooting

  • Program optimization and correction

  • Thread cutting cycle configuration

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