Fanuc Series 15i/150i-MA (Programming) Operators Manual

8.COORDINATE VALUE AND DIMENSION PROGRAMMING B-63324EN/03
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8.2 POLAR COORDINATE COMMAND (G15,G16)
The end point coordinate value can be input in polar coordinates
(radius and angle).
The plus direction of the angle is counterclockwise of the selected
plane first axis + direction, and the minus direction is clockwise.
Both radius and angle can be commanded in either absolute or
incremental command (G90, G91). By specifying a radius by either
absolute or incremental programming, the user can choose from the
following two specification methods:
(1) The origin of the workpiece coordinate system is used as the origin
of the polar coordinate system.
(2) The current position is used as the origin of the polar coordinate
system.
Format
GxxG16; Starting the polar coordinate command
(polar coordinate mode)
G00 IP ;
: Polar coordinate command
:
G15; Canceling the polar coordinate command
(polar coordinate mode)
G16 : Polar coordinate command
G15 : Polar coordinate command cancel
Gxx : Plane selection of the polar coordinate command
(G17, G18 or G19)
IP : Specifying the addresses of axes constituting the
plane selected for the polar coordinate system, and
their values
First axis: radius of polar coordinate
Second axis: radius of polar coordinate
Explanation
- When the radius is specified with absolute command
The local coordinate system becomes the center of the polar
When the angle is specified
with an incremental command
Command position
Actual position
Angle
Radius
Command position
Actual position
Angle
Radius
When the angle is specified
with an absolute command

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