Some cycles machine contours that you have written in a subprogram. Further special contour elements are available to you for writing turning contours. In this way you can program recessing and undercutting as complete contour elements with a single NC block.
Recessing and undercutting are always referenced to a previously defined linear contour element.
You can only use the recess and undercut elements GRV and UDC in contour subprograms that have been called by a turning cycle.
Various input options are available to you for defining undercuts and recesses. Some of these inputs have to be made (mandatory input); others can be skipped (optional input). The mandatory inputs are symbolized as such in the help graphics. In some elements, you can select between two different definitions. The control provides relevant selection possibilities via an action bar.
The control provides various possibilities for programming recesses and undercuts in the Recess / Undercut folder of the Insert NC function window.