HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 41)

HEIDENHAIN CNC PILOT 4290 41
1
.4 F
undamentals
Absolute and incremental workpiece positions
If the coordinates of a position are referenced to the workpiece zero
point, they are referred to as absolute coordinates. Each position on
a workpiece is clearly defined by its absolute coordinates.
Incremental coordinates: Incremental coordinates are given with
respect to the last programmed position. They specify the distance
from the last active position and the subsequent position. Each
position on a workpiece is clearly defined by its incremental
coordinates.
Absolute and incremental polar coordinates: Positions located on
the face or lateral surface can either be entered either in Cartesian
coordinates or polar coordinates.
When programming with polar coordinates, a position on the
workpiece is clearly defined by the entries for diameter and angle.
Absolute polar coordinates refer to the pole and the angle reference
axis. Incremental polar coordinates always refer to the last
programmed nominal position of the tool.