YASKAWA yasnac i80m

2.13
PROGRAM
SUPPORT
FUNCTIONS
(Cont’d)
Once
the
dry
run
switch
is
turned
cm
and the
solid
tap
mode is
started,
tapping
feed
by
GS4/G74
is
processed
the
same
as
that
of
conventional
C84/G74
even
after
the
dry
iun
switch
is
turned
off.
Therefore,
the
spindle
is
not
activated when
G93
is
executed.
Whether
dry
run
in
the
G93
block is
ON,
is
determined
when the
G&3
code
is
read.
This
determination
normally
occurs
during
execution
of
a
block
immediately
preceding
tlie
G93
block.
Therefore,
when
G93
is
operated
with
dry
run
ON'
for
program
check,
etc.,
be
sure
that
the
dry
run
switch
is
ON
from
the
beginning
and
do
not
change
it
before
completion.
Auxiliary
function
lock
if
Gy:!
is
executed
with
the
auxiliary
function
lock
switch
ON.
G93
is
nullified,
and
the
t
.84/074
commands
in
the
solid
tap
mode
are
handled
as
conventional
type
GS4/G74.
Positioning
control
on
the
spindle
is
not
exercised
cither.
Whether
the
auxiliary
function
in
the
G93
block is
locked,
is determined
when
the
G93
code is
read.
Therefore,
when
performing
program
check,
etc.
with
auxiliary
function
lock switch
ON.
be
sure
the
dry
run
switch is also
ON
from
the
beginning
and
do
not
change
it
before
completion.
Machine
lock,
Z-axis
disregard.
When
solid
lap
is
executed
with
niachim.lock.Z
axis
disiegard
ON.
the
spindle
rotates,
but
Z-axis
is
only
displayed.
Override,
spindle
override
Feed
override
during
solid
tap
is
entirely
fixed.
However,
rapid
feedrate
override
is
effective.
Spindle
override
input
in
the solid
tap
mode
is
nullifcd.
and
entirely
fixed.
Feed
hold
Feed
hold
during
cutting by
solid
tap
G84/G74
is
invalid.
Change
of
mode
Change
of
mode
during
cutting
by
solid
tap
GS4/G74
is
invalid.
Program
restart
When
the
program
is
restarted
for
any
block
in
the
solid
tap
mode,
093
is
not
executed.
G93
must
therefore
be
executed
by
commanding
it with
MDI.
Although
E
command
for
reciprocal
feed
does
not
cause
an
alarm,
it
is
disregard¬
ed. The
return
feedrate
is
set
by
parameter
pml252.
(b)
(ci
(d)
(c)
(f)
<g>
<h>
198
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