Okuma Alarm A-1717 – Unable to Use M40, M43, M44 Commands

Okuma Alarm A-1717 indicates that the commands M40, M43, or M44 cannot be executed due to motor configuration settings. These commands are typically assigned to VAC winding changeover motor specifications.

Meaning of the Alarm

This alarm appears when the control system detects that M40, M43, or M44 commands are not properly configured or are incompatible with the current motor setup. As a result, the machine cannot execute the required operation.

Possible Causes

  • Incorrect assignment of M40, M43, or M44 commands

  • VAC winding changeover motor configuration mismatch

  • Motor specification not compatible with programmed commands

  • Incorrect parameter settings in the control system

  • Programming or setup error

Recommended Checks

  • Verify motor specification and compatibility with M40, M43, M44

  • Check control system parameters related to motor configuration

  • Review CNC program and command usage

  • Compare configuration with a working setup

  • Reinitialize or reload correct machine parameters

When Professional Service Is Required

If the alarm remains after correcting the configuration, the issue may be related to deeper control system or hardware problems. In such cases, professional diagnostics are recommended.

Related Solutions

  • CNC diagnostics and troubleshooting

  • Motor configuration adjustment

  • Control system parameter correction

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