YASKAWA YASNAC 3000G - Page 52

EXAMPLE
N050
G01
X-..
Y...
*
N051
G01
1(b)
J(-a)
*
-
•
Dummy
block
A
N052
Z-
•
Z
axis
N059
Z-
•
N060
G03
X-..
Y---
1(a)
J(b)
*
Circular
interpolation
N06
1
G01
X-
•
Y-
•
•
*
•
Switching
between
G4
1
and
G42
in
compensa¬
tion mode
I
CENTER
N052I
N059
l
i
!
I
In
this
compensation
mode,
direct
switching
between
G41
and
G42
is
possible
without
mak¬
ing
cancellation
with
G40.
a
N050
\>
Y
-a
\
EXAMPLE
N051
:
DUMMY
BLOCK
(LINEAR)
b
N
10
G17
G01
F.
-
.
*
Nil
G41
(G42)
D-
. .
*
Fig.
2. 14.
13.9
N20
G01
X-
•
•
Y-
• •
F-
-
•
*
That
is,
insert
a
linear
dummy
block
that
gives
the
tangential
direction
at
the
start
point
of
the circular
interpolation
program
block
as
shown
above.
Exercise
care
with
the
sign
of
the
dummy
block data
depending
on
the
shape
of
the
circle.
The tool
stops
at
point
A
by
the
dummy
block
in
preparation
for
the
next
circular
command.
N21
G42(G4
1)
X-
•
Y-
•
.
*
-
Block
of
switching
N22
X-
•
•
£
V
A
X
/
/
\
/
Y
1
r
.
'
N051
DUMMY
BLOCK
X
Fig.
2.
14.
13.
10
-
45
-