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2.4
INTERPOLATION
(Cont'd)
(3)
The end
point of
the circular
arc
may
be specified by
G90
or
G91
respectively
in absolute
or
incremental values.
However,
the
center
of the circle is
always programmed
in incremental values from
the
start
point, irrespective
of G90 or G91.
C
Example of Programming
J
i',
17
u
an
<;
«:t
\
ir..
v
-in
i-:m
j
-in. F
r.u
.
Y
ENLi
I
*01 NT
4iV
>IAKT POINT
ij
US
20.
T
-
ifi
CENTERÿ,-'
t
-30.
X
55.
Absolute command with
G 90
1
«:
17
c;
HI
i;
x-4«.
v
j
-in
K
I So
:
- 40.
40.
\
20.
KND
POINT
\
CENTERÿ,
-ÿ'*7
I
_
10
\
(1
U3
:
20.
£
-
30.
<>
X
55.
In.
(b»
Incremental command with G 91
Fig. 2.4.5
End Point of Circular Arc
-
46
-
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