Plane Designations - Siemens SINUMERIK 840DE Programming Manual

Fundamental Geometrical Principles
1.1 Description of workpiece points
G90 P1 corresponds to X25 Z-7.5 ;(with reference to the zero point)
G91 P2 corresponds to X15 Z-7.5 ;(with reference to P1)
G91 P3 corresponds to Z-10 ;(with reference to P2)
G91 P4 corresponds to X20 Z-10 ;(with reference to P3)
Note
When DIAMOF or DIAM90 is active, the path setpoint is programmed as a radius dimension
with G91.
1.1.6

Plane designations

When programming, it is necessary to specify the working plane so that the control system
can calculate the tool offset values correctly. The plane is also relevant to certain types of
circular programming and polar coordinates.
A plane is defined by means of two coordinate axes.
1-8
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamentals