Siemens SINUMERIK 840D sl Programming Manual page 176

Fundamentals
2.9 Motion commands
Supplementary conditions
● No Cartesian coordinates such as interpolation parameters, axis addresses, etc. may be
programmed for the selected working plane in NC blocks with polar end point coordinates.
● If a pole has not been defined with G110 ... G112, then the zero point of the current
workpiece coordinate system is automatically considered as the pole:
176
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming