Siemens SINUMERIK 828D Programming Manual page 198

Motion commands
9.3 Travel commands with polar coordinates
Note
It is possible to switch block-by-block in the NC program between polar and Cartesian
dimensions. It is possible to return directly to the Cartesian system by using Cartesian
coordinate identifiers (X..., Y..., Z...). The defined pole is moreover retained up to program
end.
Note
If no pole has been specified, the zero point of the current workpiece coordinate system
applies.
Example
198
Poles 1 to 3 are defined as follows:
• Pole 1 with
G111 X... Y...
• Pole 2 with
G110 X... Y...
• Pole 3 with
G112 X... Y...
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
Fundamentals