Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-45 minutes

Alarm 61404

Siemens 840D 61404 - Channel block: Internal cycle error during tool offset.

Alarm can be triggered by following measuring cycles: all measuring cycles. Remedy: Check the dependent tool specifications.

Siemens SINUMERIKServo/AxisIntermediate30-45 minutes

61404

Siemens 840D 61404 - Channel block: Internal cycle error during tool offset.

Channel block: Internal cycle error during tool offset.

Alarm can be triggered by following measuring cycles: all measuring cycles. Remedy: Check the dependent tool specifications.

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • Incorrect tool offset values or corrupted tool table entries
  • Mismatch between tool diameter/length specifications and measuring cycle parameters
  • Tool offset memory corruption or failed save operation during previous cycle execution
  • Incompatible or missing tool data referenced by the active measuring cycle

Troubleshooting Steps

  1. 1Verify all tool offset values in the tool table match physical tool specifications and measuring cycle requirements
  2. 2Check tool diameter and length offset entries are within valid ranges and properly formatted
  3. 3Clear tool offset memory and re-enter specifications manually, then save and verify the entries
  4. 4Review the measuring cycle program parameters to confirm they reference existing and compatible tool offsets
  5. 5Execute a single tool measurement cycle in manual mode to isolate which specific tool offset is causing the error

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