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2.14 MACROPROGRAM
(G65,
G66,
G67)$(Cont'd)
2.14.2
Variables
There
are three
types
of variables: local
variables, common variables,
and
system
variables.-
(1)
Local variables
(
# 1
to
#
33)
Local variables
are used- locally
for each
macro. This
type
of variable
is
such that
each time
a
macro is called, new local
variables(
#1
to# 33)
are independently
secured for that
macro.
In this
case,
when
an
argument
is
specified, the
value of that
argument
is stored in the
local
variable; or
the results of
calculation
in the macro
are stored
in
the local variable.
The
contents
of the local variable are
empty
if
no
argument
is passed
to
the macro.
When
a
macro
returns
by
instruction of
M99,
the local variable for
that
macro
becomes blank. Also, When the
equipment is
turned
on or
reset,
ail
local variables become blank.
-
254
-
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