Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 20-45 minutes

Alarm 61279

Siemens 840D 61279 - Channel block: If tool angle equals 90°, both tool diameters must

For tool angles equal to 90°, the two tool diameters must be identical. Alarm triggered by following cycle: CYCLE61.

Siemens SINUMERIKServo/AxisIntermediate20-45 minutes

61279

Siemens 840D 61279 - Channel block: If tool angle equals 90°, both tool diameters must

Channel block: If tool angle equals 90°, both tool diameters must

For tool angles equal to 90°, the two tool diameters must be identical. Alarm triggered by following cycle: CYCLE61.

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • Tool diameter values in CYCLE61 are mismatched when tool angle is set to 90 degrees
  • Incorrect tool offset or tool table entry with unequal diameters for 90-degree tool angle
  • Programming error where different diameter values were assigned to tool geometry in the cycle call
  • Tool compensation values not properly synchronized between first and second diameter parameters

Troubleshooting Steps

  1. 1Verify the tool angle parameter in CYCLE61 call equals exactly 90 degrees in the NC program block referenced in alarm message
  2. 2Check tool table entries and offsets for the active tool - confirm both diameter values (D1 and D2) are identical when tool angle is 90°
  3. 3Review the CYCLE61 syntax in the part program; ensure diameter parameters match when angle parameter is set to 90 degrees
  4. 4Measure the physical tool and update tool table with matching diameter values, or adjust program to use equal diameter specification for 90-degree orientation
  5. 5Clear alarm after correction and restart the affected program block to verify proper cycle execution

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