Working Planes - Siemens Sinumerik 840D sl Programming Manual

Note
With DIAMOF or DIAM90 active, the set distance in incremental dimensions (G91) is
programmed as a radius dimension.
Example: Milling
The position specifications for points P1 to P3 in incremental dimensions are:
In incremental dimensions, the following position specifications result for points P1 to P3:
Position
P1
P2
P3
2.2

Working planes

An NC program requires information about the machining plane, because only then can the
control, for example, correct the tool correction values correctly. The specification of the
working plane is also required for certain types of circular-path programming and polar
coordinates.
The working plane is specified in the base Cartesian workpiece coordinate system with two
coordinate axes. The third coordinate axis is perpendicular to this work plane and determines
the infeed direction of the tool (e.g. for 2D machining).
Fundamentals
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Position specification in incremental di‐
mensions
X20 Y35
X30 Y20
X20 Y -35
Fundamental Geometrical Principles
2.2 Working planes
The specification refers to:
Zero point
P1
P2
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