
B–61404E/08
8. COORDINATE VALUE
AND DIMENSION
PROGRAMMING
95
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).
Specifying the addresses of axes constituting the plane se-
lected for the polar coordinate system, and their values
First axis : radius of polar coordinate
Second axis : radius of polar coordinate
G90 specifies the zero point of the lworkpiece coordinate
system as the origin of the polar coordinate system, from
which a radius is measured.
G91 specifies the current position as the origin of the polar
coordinate system, from which a radius is measured.
Gjj Gff G16 ;
G15 ;
G16 :
Polar coordinate command
G15 :
Gjj :
Gff :
P
I
Starting the polar coordinate command
(polar coordinate mode)
Polar coordinate command
Canceling the polar coordinate command
(polar coordinate mode)
Polar coordinate command cancel
Plane selection of the polar coordinate command
(G17, G18 or G19)
G∆∆
Gnn :
Angle selection of the polar coordinate command
G90 : Angle is specified with absolute command
G91 : Angle is specified with incremental command
_ ;
IP
_ ;
IP
Specify the radius (the distance between the zero point and the point) to
be programmed with an absolute command. The zero point of the
workpiece coordinate system is set as the origin of the polar coordinate
system.
Radius
Command position
Actual position
Angle
Radius
Angle
Command position
Actual position
When the angle is specified
with an absolute command
When the angle is specified
with an incremental command
8.2
POLAR COORDINATE
COMMAND
(G15, G16)
Format
D Setting the zero point of
the workpiece
coordinate system as the
origin of the polar
coordinate system