Error description 1A0-011B

Error message

Noncylindrical contour must not begin at an inside corner

Cause of error

You tried to begin a noncylindrical contour with radius compensation at an inside corner (concave position).
These are some of the possible causes of this error message:
- The starting point lies on a real inside corner
- The starting point lies on the transition between two arcs that are tangential, but were
programmed or generated with poor accuracy
- A "round" inside noncylindrical contour was resolved into nothing but straight-line segments. The starting point
then lies on a tangential transition between two arcs. However, the resolution
into straight line segments again results in an inside corner.

Error correction

- Correct the starting point by choosing a correct point that does not lie on an inside corner
- Create/generate the noncylindrical program (especially circular movements) with higher accuracy
- Avoid resolving the noncylindrical contour into straight-line segments, or manually place the starting point in the middle of a
generated line segment
- Have the tool-compensated path of the noncylindrical contour calculated/generated externally instead of by the control.