Siemens SINUMERIK 828D Programming Manual page 201

Note
The polar coordinates refer to the pole specified with
plane selected with
Note
The 3rd geometry axis, which lies perpendicular to the working plane, can also be specified
in Cartesian coordinates (see the following diagram). This enables spatial parameters to be
programmed in cylindrical coordinates.
Example:
Fundamentals
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
to .
G17 G19
G17 G0 AP... RP... Z...
9.3 Travel commands with polar coordinates
... and apply in the working
G110 G112
Motion commands
201