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Siemens SINUMERIK Controller
Servo/Axis · Intermediate · 20-45 minutes
Siemens 840D 61003 - Channel Block: No feed programmed in cycle
The parameter for the feed has been incorrectly specified. Alarm triggered by following cycles: CYCLE71, CYCLE72.
61003
Siemens 840D 61003 - Channel Block: No feed programmed in cycle
Channel Block: No feed programmed in cycle
The parameter for the feed has been incorrectly specified. Alarm triggered by following cycles: CYCLE71, CYCLE72.
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Common Causes
- Feed rate parameter missing or set to zero in CYCLE71 or CYCLE72 block
- Incorrect feed syntax in NC program; feed value not properly formatted before cycle call
- Feed override at 0% preventing cycle execution despite programmed feed
- Parameter corruption or uninitialized variable passed to cycle feed argument
- Incompatible feed unit specification (metric vs. imperial mismatch)
Troubleshooting Steps
- 1Verify NC program syntax at block %2 contains valid feed value (F parameter) before CYCLE71 or CYCLE72 call; confirm feed is not zero or null
- 2Check feed override percentage on machine panel; ensure it is set above 0% to allow cycle execution
- 3Review cycle parameter list in program memory; confirm feed argument is properly defined with correct data type and units matching machine configuration
- 4Test with explicit feed command (e.g., F200) immediately preceding the cycle block; recompile and reload NC program
- 5Compare working and failing program versions; isolate syntax differences in cycle calls and feed parameter declarations
Seeing Multiple Alarms?
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