Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 20-40 minutes

Alarm 61503

Siemens 840D 61503 - Channel block: tool nose radius compensation left or right

The alarm can be triggered by the following grinding cycles: CYCLE410, CYCLE411, CYCLE412, CYCLE413, CYCLE414, CYCLE415, CYCLE416, CYCLE420 Remedy: A tool offset value has to be programmed

Siemens SINUMERIKServo/AxisIntermediate20-40 minutes

61503

Siemens 840D 61503 - Channel block: tool nose radius compensation left or right

Channel block: tool nose radius compensation left or right

The alarm can be triggered by the following grinding cycles: CYCLE410, CYCLE411, CYCLE412, CYCLE413, CYCLE414, CYCLE415, CYCLE416, CYCLE420 Remedy: A tool offset value has to be programmed

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • Tool nose radius compensation direction (left/right) not specified in grinding cycle parameters
  • Missing or incorrect tool offset values in the tool table
  • Grinding cycle called without proper tool definition or offset assignment
  • Incompatible tool offset data type or format in the NC program
  • Tool compensation mode not activated before grinding cycle execution

Troubleshooting Steps

  1. 1Verify the grinding cycle (CYCLE410-CYCLE416 or CYCLE420) includes proper tool nose radius compensation parameters with left (G41) or right (G42) specification
  2. 2Check the tool table entries for the active tool to confirm offset values are present and correctly formatted as numeric values
  3. 3Review the NC program block preceding the grinding cycle to ensure tool offset is explicitly programmed or called via tool change command
  4. 4Inspect the tool definition to confirm nose radius compensation direction matches the programmed geometry and cycle requirements
  5. 5Confirm tool compensation mode is active in the control before the grinding cycle executes; recompile and reload the NC program if parameter changes were made

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