YASKAWA yasnac i80m

2.7
COORDINATE
SYSTEM
(Cont’d)
(3)
Return
to
reference
coordinate
system
(G52)
[G52-1
With
the
above
command,
it
is
possible
to
cancel
the
currently
selected
work
coordinate
system
and
return
to
the
reference
coordinate
system.
<S>
The
G52
command
is
a
modal
command.
<0)-
If
the
work
coordinate
system
shift
quantity
is
changed
after
G54
to
G59
is
executed
and
a
work
coordinate
system
is
selected,
whether
or
not
that
shift
quantity
immediately
becomes
valid
for
operation
(withoutG54toG59commands)is
determined
by
a
parameter
(pm4012D0).
>?>
To
change
a
coordinate
system
by
G54
to
G59
command,
create
a
program
so
that
a
new
coordinate
system
is
entered
in
the
G90
mode
and then
return
to
the
reference
cordinate
system
in
the
G90
mode.
<§>
Even
if
G54
to
G59
is
instructed
while
tool
length
offset
or
tool
position
offset
is
applied,
the
corrected
quantity
is
not
canceled.
It
is
usually
necessary
to
instruct
G54
to
G50
after
canceling
the
tool
length
offset
or
tool
position
offset.
WORK
COORDINATE
SYSTEM
POSITION
Z100.
(143
ZO
HOI
:
G54
;
WORK
COORDINATE
SYSTEM
POSITION
Z1100.
G90
Z1000.
Actual Z-axis
movement
quantity
becomes
1400.
G54 shift
quantity
Z
=
-300.
Offset
HOI
=
100.
Do
not
normally
use
G92
in
G54
to
G59.
If
G92
is
instructed
during
execution
in
a
coordinate
system
set
by
G54
to
G59,
G54
to
G59
and
reference
coordinate
system
are
shifted
so
that
the
current
position
becomes
the
position
instructed
by
G92.
tfo>
Be
sure
to
instruct
G54
to
G59
in
the
G00
or
G01
mode.
Command
in
any
other
mode results
in
alarm
"322.”
ffl)
Temporary
movement
in
machine
coordinate
system
(G53)
A
temporary
movement
on
the
machine
coordinate
system
can
be
instructed
by
using
G53
command.
G53
is
a
non-modal
G
code.
(Program
example)
I
G53
(G90)
GOO
X
Y
jj
(o
1
Commanding
J2
or
above
in
Option
1.
J10
or
above
in
Option
2,
or
J28
or
above
in
Op¬
tion
3
results
in
an
alarm.
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80
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