Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 20-45 minutes

Alarm 61240

Siemens 840D 61240 - Channel Block: Wrong feed type

The feed type is not possible for this machining. Alarm triggered by following cycles: F_DRM_DR, F_DRM_PE, F_DRM_RE, F_DRM_SI, F_GROOV, F_MIM_TR, F_ROUGH, F_SP_EF, F_UCUT_T

Siemens SINUMERIKServo/AxisIntermediate20-45 minutes

61240

Siemens 840D 61240 - Channel Block: Wrong feed type

Channel Block: Wrong feed type

The feed type is not possible for this machining. Alarm triggered by following cycles: F_DRM_DR, F_DRM_PE, F_DRM_RE, F_DRM_SI, F_GROOV, F_MIM_TR, F_ROUGH, F_SP_EF, F_UCUT_T

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • Feed type parameter mismatch between cycle call and machine configuration
  • Incompatible feed mode selected (G93/G94/G95) for the active canned cycle
  • Missing or incorrect feed specification in the NC program block
  • Machine axis configuration does not support the requested feed type for this cycle

Troubleshooting Steps

  1. 1Verify the feed type (G93 inverse time, G94 units/minute, G95 units/revolution) matches the canned cycle requirements in the Siemens documentation
  2. 2Check the NC program syntax for the affected canned cycle call and confirm feed parameters are correctly specified
  3. 3Review machine configuration and axis kinematics to ensure compatibility with the feed type being used
  4. 4Compare the program against a known working example of the same canned cycle with identical feed specifications
  5. 5Clear the alarm, reload the program, and execute a single block test to isolate the exact block causing the error

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