YASKAWA yasnac i80m - Page 264

2.14
MACROPROGRAM
(G65,
G66,
G67)*
A
set
of
instructions
is
provided
for
this
system.
By
using
these
instructions,
the tool
machine
manufacturers
or
the
users
of
the
system
can
produce
a
program
to
implement
their
original
functions.
This
program
is
called
a
macroprogram,
which
can
be
called
and
executed
by
a
single-block
command
using
G65
or
G66.
A
macroprogram
makes the
following
possible:
(T>
Variables
can
be
used.
Arithmetic
operations
using
variables
and
constants
are
possible.
<3>
Branch
or
repeat
control is
possible.
f-11
Messages
and
dates
can
be
output.
Argument
specification
is
possible.
Therefore,
macroprogram
permits
creating
a
program
to
execute
complex
arithmetic
operations
or
operations
requiring
conditional
judgment.
The
differences
between
a
macroprogram
and
subprogram
are as
follows:
(1)
Although
macroprogram
call
(G65,
G661
can
specify
an
argument,
subprogram
call
(M98)
cannot
specify
an
argument.
(2)
When
a
M98
block
contains
any
command
other
than
P,
Q,
or
L,
control
jumps
to
a
subprogram
after
it
is
executed.
On
the
other
hand,
any
command
other
than
P
or
L in
G65
and
G66
is
assumed
to
be
argument
specification,
so
that
control
immediately jumps
to
a
macroprogram.
(3)
Local
variables.used
in
a
macroprogram
have
levels
corresponding
to
the level
of
-that
macroprogram.
Local
variables
used
in
a
subprogram
have
levels
which
are
unchanged.
That
is.
local
variables
in
a
macroprogram
are
different
before
and
after
the
macroprogram
is
called:
local
variables
in
a
subprogram
are
the
same.
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