YASKAWA yasnac i80m

2.7
COORDINATE
SYSTEM
(Cont’d)
*
A"
GS4
ROTATION
COORDINATE
SYSTEM
lj'i4
A
\
O.'.-IR
G54
WORK
COORDINATE
SYSTEM
SHIF
T
Y
C.SC-
REFERENCE
COORDINATE
SYSTEM
C54
WORK
COORDINATE
SYSTEM
SHIFT
X
Fig.
2.7.8
Rotation
of
Work
Coordinate
System
NOTE
O
When
coordinate
rotation is
performed
by
G54
command,
the
G2S
G30
command
performs
rotation
at
an
intermediate
positioning
point,
but
does
not
perform
coordinate
rotation
at
the
reference
point.
G53
does
not
perform
coordinate
rotation
either.
©
The
plane
of
coordinate rotation
for
this
specification
is
fixed
to
the
G
17
plane.
©
For
cancellation
after
coordinate
rotation
by
the
G54
command,
clear the
shift
quantity
of
the work
coordinate
system
being
instructed
or
that
of
the
G52
command
to
0.
O
Combination
with
the
mirror
image,
scaling,
and coordinate
rotation
functions
The
above
G
codes
must
be
arranged
in
the
specified
order.
Otherwise,
alarm
285
occurs.
Work
coordinate
rotation
(G54)
»
Mirror
image
(M95)
)
Scaling
(G51)
)
Coordinate
rotation
(G68)
©
Reset
during
coordinate
rotation
by
G54
Intervention
to
coordinate
rotation
by
resetting
affects
the
programmed
trajectory
thereafter.
This
is
because
of
the
following
two
specifications!
1)
By
resetting,
the
current
position
is
fetched
into
NC
as an
NC-
instruction
position,
to set
it
again.
2)
In
coordinate
rotation,
an
axis
motion
length
is
calculated
from
the
NC
instruction
position
to
the
center
of
rotation.
©
For
specifying
rotating
coordinate
system,
execute
both
X-and
Y-axis
specifications
as
the
first
move
command
of
the
new
coordinate.
When
only
one
axis
is
specified
by
©
2).
inadvertant
movement
is
sometimes
performed.
-
90
-