YASKAWA YASNAC 3000G

Extension
or
reduction
is
made
only
in
the
block
in
which
G45
to
G48
are
programmed
and
movements
in
other
blocks
are
unaffected.
Therefore,
to
restore
extended
or
reduced
values
to
the
original
program
values,
extension
or
reduction
in
the
opposite
direc¬
tion
must
be
programmed
eventually.
2.14.15
TOOL
POSITION
OFFSET
A
(645
TO
G48)
Tool
position
offset
A
is
for
extending
or
reducing
the
movement
value
designated
in
the
program
by
the
values
in
the
tool
offset
memory,
and
is
main¬
ly
used
for
tool
radius
compensation
for
square
patterns.
Therefore,
this
function
is
not
requir¬
ed
with
controls
equipped
with
G40,
G41,
G42
(tool
radius
compensation
C).
an
3.
Make
program
command
by
incremental
de¬
signation
(G9
1)
for
the sake
of
making
the
above
operation
clear.
When
the
command is
given
by
absolute
designation
(G90),
extension
and
reduction
are
made
along
the
direction
of
movement to
the
movement
value
from
the
end
point
of
the
preceding
block,
to
the
command
target
point.
That
is,
extension
and
reduction
are
made
to
the
incremental
movement
amount.
The
programming
may
become
complicated.
1.
G
codes
of
tool
position
offset
A
Group
G
code
Meaning
G45
A
Extension
A
Reduction
G46
G47
Expansion
by
double
A
4.
When
programming
G45
to
G48,
designate
the
tool
offset
number
by
a
D
code
simultaneously
with
axis
designation.
Because
D
codes
are
,
modal,
they
may
be
omitted
if
the
same
D
code
is
used.
Store
the
tool
radius
value
in
the
tool
offset
value
memory.
A
G48
Reduction
by
double
2.
G45
to
G48
extend
and
reduce
the
movement
value
programmed
in
the
block,
in
the
direc¬
tion
of
movement
by
the
tool
offset
value.
EXAMPLE
G91
©
GOO
G46
X-.-
Y...
D01
*
(D01)
F-
••
*
(D01)
*
(D01)
*
(D01
)
*
GOO
G46
X...
Y--
(D01)
*
Reduction
Extension
by
double
Extension
by
double
Extension
by
double
Extension
by
double
Reduction
©
G47
G01
Y-
•
©
G47
X-
•
©
G47
Y-
•
©
G47
X-
•
©
©
r;
©
©
©i
j
Y
©
PROGRAMMING
X
Fig.
2.
14.
15.
1
-
59
-