Polar Coordinate Command (G15, G16) - Siemens SINUMERIK 802D sl Programming Manual

Enhanced Level Commands

4.5 Polar coordinate command (G15, G16)

4.5 Polar coordinate command (G15, G16)
Using polar coordinate command it is possible to program the end point coordinate
value in radius and angle. Any dimension word between G16 and G15 command is
interpreted as the polar coordinate values for radius and angle in the current plane.
The first axis of the plane represents the polar radius, while the second axis repre-
sents the polar angle.
Format
G17 (G18, G19) G90 (G91) G16;
G90 (G91) X... Y... Z...
... ;
... ;
G15;
G16:
G15:
G17, G18, G19:
G90:
G91:
X, Y, Z:
Note
If the pole is moved from the current position to the workpiece zero, the radius is
calculated as the distance from the current position to the workpiece zero.
Example
N5 G17 G90 X0 Y0;
N10 G16 X100. Y45.; Polar coordinates ON, pole is workpiece zero,
N15 G91 X100 Y0;
N20 G90 Y90.;
G15;
The polar radius is always traversed as an absolute value while the polar angle can
be interpreted as an absolute or incremental value.
4-136
SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition
Polar coordinate command ON
Polar coordinate command
Polar coordinate command CANCEL
Polar coordinate command
Polar coordinate command CANCEL
Plane selection
The pole is at the workpiece zero
The pole is at the current position
First axis: radius of polar coordinate
Second axis: angle of polar coordinate
position X 70,711 Y 70,711 in Cartesian coordi
nate system
Pole is current position,
i.e. position X 170,711 Y 70,711
No X in block, pole is at workpiece zero,
Radius = SORT(X*X +Y*Y) = 184,776
© Siemens AG 2007 All rights reserved
04.07