# Rotation in a plane (contour rotation)

Selection: #ROTATION ON

The coordinate system can be rotated within the main plane by using contour rotation. Rotation may also be applied within an already rotated coordinate system (CS, ACS).

Rotation of the main plane

Effectiveness

- Effective up to deselection or up to the end of the program.
- Contour rotation acts in the main plane only on the programmed axis coordinates before all other contour-influencing functionalities, i.e. all offsets and mirror-imaging operations can be used as before.

## Attention

A change of plane with G17/18/19 automatically deselects an active contour rotation. The warning P-ERR-21143 is output.

Deselection: #ROTATION OFF