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2.13
PROGRAM SUPPORT FUNCTIONS (Cont'd)
(c)
Programing Example in
G90/91
mode
(
Example
of Programming
J
(A)
G
98
G 90 G
81
X---
Y**- Z-70. R-40. F---
:
INI UAL LUINT
RETURN. ABSOLUTE
®
G99 G 91 G 81
X---
Y--- Z-70. R-TO. F---
:
I
K-I'OINT
RETURN.
INCREMENTAL
n,
o-
Q
A-
- - -
?
—
?r
INITIAL I VINT
i
"-fjh
i
-jn
i
vr-
R-rOINT
i
l
»-
h-IVINI
-ÿin
-7n
Z- 1 VINT
—
<II
-
-
-
Z POINT
_
y
Fig.2.13.6
N1 G92
XO
YO ZO:
N2
G98
G90
G81 X10. Y10. Z-50. R-20.
F100;
N3 G91 X20. R-30.
;
0
Z-50.
;
N5 G99 Z-40.
R-50.
:
N6 G80 GOO Z50. :
N4
Table 2.13.6 Absolute Position
Absolute
position
Remarks
Z
=
R
=
<I>
-50.
Canned
cycle
start
-20.
(?) -50.
Change or
X.
R : Z-point
at
the position
of the
previous
block
-30.
(?)
-SO.
Change of Z
.
R-point
at
the position
of the previous
block
-30.
<I>
-
90.
Change
of
R. Z
-50.
<2>
Tool moves
to
Z-0
(absolute
position).
Canned
cycle cancel
182
-
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