What causes Siemens SINUMERIK alarm 10860?

Missing F (feedrate) value in a block where interpolation mode requires explicit feedrate specification. Switching between linear and revolutional feedrate without reprogramming F value. G01/G02/G03 or other non-rapid modes active without corresponding feedrate in current or previous blocks. Corner/chamfer modal feedrate (FRCM) active but F value not provided on mode change. Program assumes modal feedrate carry-over when feedrate type has changed.

How do I fix Siemens SINUMERIK alarm 10860?

1. Review the NC program at the indicated block number and verify an F value is explicitly programmed before any G01, G02, G03, or other interpolation commands 2. Check if feedrate mode has switched between linear (mm/min) and revolutional (rev/min) and ensure F is reprogrammed for the new mode 3. Confirm that if corner/chamfer modal feedrate (FRCM) is active, the F value is included when transitioning between feedrate types 4. Verify no G00 rapid traverse is mistakenly replaced with G01 or G02 without an accompanying F command 5. Add or correct the missing F value in the program block, then reload and test the program from a safe starting position

Siemens SINUMERIK codes

axismd.ai

Siemens SINUMERIK Controller

Servo/Axis · Basic · 10-20 minutes

Alarm 10860

Siemens 840D 10860 - Channel block feedrate not programmed

Reason: In the displayed block, an interpolation type other than G00 (rapid traverse) is active. The F value has not been programmed. Path feed F is active, on change between linear and revolutional feedrate, F has not been programmed again. The modal feed for corner/chamfer (FRCM) is active, on cha

Siemens SINUMERIKServo/AxisBasic10-20 minutes

10860

Siemens 840D 10860 - Channel block feedrate not programmed

Channel block feedrate not programmed

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Common Causes

Missing F (feedrate) value in a block where interpolation mode requires explicit feedrate specification
Switching between linear and revolutional feedrate without reprogramming F value
G01/G02/G03 or other non-rapid modes active without corresponding feedrate in current or previous blocks
Corner/chamfer modal feedrate (FRCM) active but F value not provided on mode change
Program assumes modal feedrate carry-over when feedrate type has changed

Troubleshooting Steps

1Review the NC program at the indicated block number and verify an F value is explicitly programmed before any G01, G02, G03, or other interpolation commands
2Check if feedrate mode has switched between linear (mm/min) and revolutional (rev/min) and ensure F is reprogrammed for the new mode
3Confirm that if corner/chamfer modal feedrate (FRCM) is active, the F value is included when transitioning between feedrate types
4Verify no G00 rapid traverse is mistakenly replaced with G01 or G02 without an accompanying F command
5Add or correct the missing F value in the program block, then reload and test the program from a safe starting position

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