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Siemens SINUMERIK Controller
Servo/Axis · Intermediate · 20-45 minutes
Siemens 840D 14036 - Channel block involute: end point invalid
With involute interpolation, the end point of the involute must be outside the basic circle. The programmed center point / radius or end point must be adapted accordingly.
14036
Siemens 840D 14036 - Channel block involute: end point invalid
Channel block involute: end point invalid
With involute interpolation, the end point of the involute must be outside the basic circle. The programmed center point / radius or end point must be adapted accordingly.
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Common Causes
- End point of involute is located on or inside the basic circle instead of outside it
- Incorrectly calculated or programmed involute radius relative to the basic circle
- Center point coordinates do not properly define the involute geometry
- Programming error where involute parameters were copied from previous operation with different geometry
Troubleshooting Steps
- 1Verify involute end point coordinates are mathematically outside the basic circle by calculating distance from center point
- 2Check involute radius specification and confirm it is greater than the basic circle radius
- 3Review NC program block for correct center point coordinates and involute parameters
- 4Use machine diagnostic or CAM software to visualize involute path and confirm end point location relative to basic circle
- 5Edit program with corrected end point coordinates and verify involute geometry before resuming cycle
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