YASKAWA yasnac i80m

2.9
SPINDLE
FUNCTION
(S
FUNCTION)
Spindle
Command
(1)
The
spindle speed
{in
units
of
r/min)
can
be
directly
specified
by
entering
a
5-dig’it
number
following
address
S
(SC
!
).
(2)
The instructed
S
becomes
effective from
the
moment
the
S-comniand
complete input
signal
(SFIN)
turns
on.
(3)
If
S-specification
is
instructed
in
the
same
block
as
M03
{spindle
forward
rotation)
or
M04
(spindle
reverse
rotation),
the
program
normally
advances
to
the
next
block
after
the
spindle
reaches
the
speed
specified
by
S.
For
further
information,
refer
to
command
or
reference
manuals issued
by
your
machine
tool
manufacturer.
2.9.1
luim
Mu;:;
s
S
MATCHED
I
Oiiil
rpm
ACTUAL
SPINDLE
SPEED
SIART
*
t
M
COMPLETE
START
OF
THE
ABOVE BLOCK
Fig.
2.9.1
Spindle
Command
(4)
The
S-command
is
modal,
so
that
once
instructed,
it
remains valid
until another
S-command
is
given.
Even
if
MGS
is instructed
and the
spindle
actually
stops,
the
S-command
is
retained.
Consequently,
the
previously
instructed
S-command
can
be started
by
instructing
M03
(or
M04)
again.
(5)
If
you
change
an
S-command
after
the
spindle
is
started
by
M03
(or
M04),
pay
attention
to
the selected
range
of
spindle
speed.
1.
The
k>wer
limit
of
S-command
(SO
and
its
vicinity)
is
determined
by
the
main axis
motor
and
varies
with
each
machine. For
details,
refer
to
command
or
reference
..
manuals
issued
by
your
machine
tool
builder
2.
Do
not
instruct
a
negative
S-command.
102
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