# ID 21751

Invalid definition for 3D circles.
Description | The starting, intermediate and end points are required to obtain the unambiguous definition of a 3D circle. These 3 points must meet specific conditions in order to calculate a 3D circle. For example, the points may not

- be identical or
- lie on a straight line

Response | Class | 1 | Abort NC program processing.
Solution | Class | 3 | With error value 1, program the points (not identical, not colinear) so that a 3D circle can be described taking the calculation tolerance into consideration.
Parameter | %1: | Current value [-]
Value for the cause of error: 1: The starting, intermediate and end points are identical or lie on a straight line (colinear). An internal calculation tolerance is used to determine colinearity. Therefore the 3 points may not be anywhere approximating a straight line.

2: Internal calculation error (negative root). Please forward the complete error message to the CNC manufacturer

Error type | 1, Error message from NC program.