Polar Coordinates (G15, G16) - Siemens Sinumerik 840D sl Programming Manual

4.4

Polar coordinates (G15, G16)

While programming in polar coordinates, the positions in the coordinate system are defined
with a radius and/or angle. Polar coordinate programming is selected with G16. It is
deselected again with G15. The first axis of the plane is interpreted as polar radius, the
second axis as polar angle.
Format
G17 (G18, G19) G90 (G91) G16
G90 (G91) X... Y... Z...
...
...
G15
G16: Polar coordinates command
G15: Deselection of polar coordinates command
G17, G18, G19: Selection of plane
G90: The pole is located on the workpiece zero.
G91: The pole is located on 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 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.
N15 G91 X100 Y0
N20 G90 Y90.
G15
The polar radius is always taken as absolute value, while the polar angle can be interpreted
as absolute value as well as incremental value.
ISO Milling
Programming Manual, 06/09, 6FC5398-7BP10-1BA0
;Polar coordinates command ON
;Polar coordinates command
;Polar coordinates command OFF
;Polar coordinates ON,
;the pole is at the workpiece zero,
;Position X 70,711 Y 70,711
;in the Cartesian coordinate system
;the pole is the current Position,
;i.e. the Position X 170.711 Y 70.711
;No X in the block
;The pole is on the workpiece zero,
;Radius = SORT(X*X +Y*Y) = 184.776
Additional functions
4.4 Polar coordinates (G15, G16)
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