Enhanced Level Commands
4.5 Polar coordinate command (G15, G16)
04.07
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SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition
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; Polar coordinate command ON
G90 (G91) X... Y... Z... Polar coordinate command
... ;
... ;
G15; Polar coordinate command CANCEL
G16: Polar coordinate command
G15: Polar c oordinate command CANCEL
G17, G18, G19: Plane selection
G90: The pole is at the workpiece zero
G91: The pole is at the current position
X, Y, Z: First axis: radius of polar coordinate
Second axis: angle of polar coordinate
Note
If the pole is moved from the current position to the workpiece z ero, 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,
position X 70,711 Y 70,711 in Cartesian coordi
nate system
N15 G91 X100 Y0; Pole is current position,
i.e. position X 170,711 Y 70,711
N20 G90 Y90.; No X in block, pole is at workpiece zero,
Radius = SORT(X*X +Y*Y) = 184,776
G15;
The polar radius is always traversed as an absolute value while the polar angle can
be interpreted as an absolute or incremental value.
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