Siemens SINUMERIK 840D sl Programming Manual page 28

Fundamentals
2.1 Fundamental Geometrical Principles
Position specifications in the form of Cartesian coordinates
To simplify things, we will only consider one plane of the coordinate system in the following
example, the X/Y plane:
Points P1 to P4 have the following coordinates:
Position
P1
P2
P3
P4
Example: Workpiece positions for turning
With lathes, one plane is sufficient to describe the contour:
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Coordinates
X100 Y50
X-50 Y100
X-105 Y-115
X70 Y-75
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming