HEIDENHAIN TNC 320 (77185x-01) ISO programming - Manual (Page 183)

Fundamentals of Path Functions 6.2
6
TNC 320 | User's Manual for DIN/ISO Programming | 3/2014
183
Radius compensation
The radius compensation must be in the block in which you
move to the first contour element. You cannot activate radius
compensation in a circle block. It must be activated beforehand in
a straight-line block (see "Path contours - Cartesian coordinates",
page 193).
Pre-position
Danger of collision!
Before running a part program, always pre-position
the tool to prevent the possibility of damaging it or
the workpiece.