FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

PROGRAMMING
B–62754EN/01
8. COORDINATE SYSTEM
99
Select the planes for circular interpolation, tool nose radius
compensation, coordinate system rotation, and drilling by G–code.
The following table lists G–codes and the planes selected by them.
Table 8.4 Plane selected by G code
G code
Selected
plane
Xp Yp Zp
G17 Xp Yp plane
X–
a
xi
s
o
r
a
n Y–
a
xi
s
o
r
a
n Z–
a
xi
s
o
r
a
n
G18 Zp Xp plane
X axis
or
an
axis parallel
to it
Y axis
or
an
axis parallel
to it
Z axis
or
an
axis parallel
to it
G19 Yp Zp plane
t
o
it
t
o
it
t
o
it
Xp, Yp, Zp are determined by the axis address appeared in the block in
which G17, G18 or G19 is commanded.
When an axis address is omitted in G17, G18 or G19 block, it is assumed
that the addresses of basic three axes are omitted.
Parameter No. 1022 specifies whether each axis is a basic axis (X–axis,
Y–axis, or Z–axis) or an axis parallel to a basic axis.
The plane is unchanged in the block in which G17, G18 or G19 is not
commanded.
When the power is turned on, G18 (ZX plane) is selected .
The movement instruction is irrelevant to the plane selection.
NOTE
1 U–, V–, and W–axes (parallel to a basic axis) can be used
with G–codes B and C.
2 Direct drawing dimension programming, chamfering, corner
R, multiple repetitive canned cycle, and simple canned
cycle are enabled only for the ZX plane.
Specifying these functions for other planes causes P/S
alarm No. 212 to be generated.
Plane selection when the X–axis is parallel with the U–axis.
G17X_Y_; XY plane,
G17U_Y_; UY plane
G18X_Z_; ZX plane
X_Y_; Plane is unchanged (ZX plane)
G17 ; XY plane
G18 ; ZX plane
G17 U_ ; UY plane
G18Y_ ; ZX plane, Y axis moves regardless without any
relation to the plane.
8.4
PLANE SELECTION
Explanations
Examples

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