YASKAWA YASNAC 3000G

5.
Extension
and
reduction
Extension
or
reduction
is
determined
by
the
sign
of
the tool
offset
value
designated by
a
D
code
in
addition
to
the
G
code.
6000
(COMMAND)
4000
(EXTENSION
BY
DOUBLE)
<
-
----
-»o
t
\
2
10000.
POINT
(TOOL
MOVEMENT)
Offset
value
by
preceding
block
START
POINT
Table
2.14.
15.1
Sign
of
tool
offset
value
Positive
Negative
Fig.
2.
14.
15.3
Reduction
G45
Extension
Extension
Reduction
G46
Note: Where the
tool
offset
value
is
larger
than the
programmed
movement
value,
the
direction
of
movement
may
be
reversed
when extension
or
reduction
is
applied.
Reduction
by
double
Extension
by
double
G47
Reduction
by
double
Extension
by
double
G48
4
Note:
In
general,
tool
offset
value
should
be
"positive.
"
G46
X1000
D10
*
D10
=
2000
6.
Values
of
extension
and
reduction
1000
(COMMAND)
7
2000
A.
Programmed
incremental
move
values
are
extended
or
reduced
by
the
designated
tool
offset
values
or
by
twice
their values.
END
POINT
START
POINT
(TOOL
MOVEMENT)
G9
1
GOO
G47
X6000
D10
*
DIO
=
2000
Fig.
2.
14.
15.4
6000
(COMMAND)
4000
(EXTENSION
BY
DOUBLE)
- - - - - -
3
7.
The above
applies
to
X
and
Y
axes,
but
G45
to
G48
may
also
be
programmed
to
Z
axis
in
the
same
manner.
However,
because
they
are
used
as
the
position
offset
to
Z
axis,
the
program
is
easier
to
understand
if
H
codes
-
are
used instead
of
D
codes.
10000
END
START
POINT
POINT
(TOOL
MOVEMENT)
Fig.
2.
14.
15.2
8.
Application
to
circular
interpolation
If
I,
J,
K
are
programmed
in
the
block
with
G45
to
G48,
extension
or
reduction
is made
respectively
in
the
same
directions
as
X,
Y
Z.
Therefore,
cutter
radius
compensation
is
possible
with
1/4
circle
or
3/4
circle
only.
B.
Where extension
or
reduction
is
applied
to
an
axis
in
the
preceding
block
and
the
start
point
has
already
been
offset,
the
total
move¬
ment
value
is
identical
to
that
described
a-
bove,
but
the
distance
is
measured
from
the
offset
start
point.
With
an
instruction
same
as
that
described
above:
60
-