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Siemens SINUMERIK Controller
Servo/Axis · Intermediate · 30-60 minutes
Siemens 840D 61268 - Channel block: Illegal machining direction, residual corners are
In face milling, the machining direction does not match the selected delimitations. Alarm triggered by following cycle: CYCLE61.
61268
Siemens 840D 61268 - Channel block: Illegal machining direction, residual corners are
Channel block: Illegal machining direction, residual corners are
In face milling, the machining direction does not match the selected delimitations. Alarm triggered by following cycle: CYCLE61.
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Common Causes
- Face milling cycle parameters do not align with programmed tool path direction
- Workpiece delimitation (boundary definition) conflicts with cutting direction in CYCLE61
- Incorrect corner radius or residual corner settings causing geometry mismatch
- Feed direction or ramp angle incompatible with defined work area boundaries
- Contour definition in part program does not match machine kinematics or tool approach vector
Troubleshooting Steps
- 1Verify CYCLE61 parameter definitions match the actual workpiece geometry and delimitation boundaries
- 2Check tool approach direction and feed vectors are consistent with programmed work area corners and edges
- 3Review residual corner radius values and confirm they are geometrically achievable within defined boundaries
- 4Inspect part program for conflicting contour or pocket definitions that contradict the cutting direction
- 5Validate machine kinematics and confirm axis travel limits do not interfere with calculated tool path
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