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2.3
PREPARATORY FUNCTION (G-FUNCTION)
I
An address character G and
up
to
3
digits following
it
specify the operation
of the block.
(1)
There
are
two types
of
G codes.
•
Non-modal G code
(marked
with
*
):
the codes
are
effective
only
for
the commanded block.
•
Modal G code
(belonging
to
groups
01
to 23):
the codes belonging
to
the division B
are
included in the basic
specifications.
Once
they are commanded, they
are
effective until another G code
in
the
same group
will be commanded.
I
They can
be
programmed
twice
or more
in the
same
block. When
different G codes in the
same
group are programmed,
the last
appearing
G code is effective.
(2)
When a G code belonging
to
the 01
group
is commanded during
a
canned
cycle (G73, G74,
G76.
G77 and G81 through
G89),
the canned
cycle
is canceled
and
these codes in the
group 09
becomes G80.
(3)
When
the
RESET
key is
depressed during the execution of a tool radius
compensation C (G41, or
G42)
or a
canned
cycle, they
become G40
or
G80, respectively, winch cancels
the
programmed
commands.
I
(4)
G43.
G44,
G49 and G45
through G48 belonging
to
the
*
group
can
be
programmed together
with the
following G codes
in the 01
group
in
the
same
block.
If
*
group
other than those G codes and G codes of 08
group can
be
programmed in
the
same
block
as
G code of 01
group an
alarm will be
issued.
Table 2.3.1
Combination G code
G-C's
G44.
G4S
GOO,
G0|,
G 60
G45
to
G4»
GOO,
G01. G0L\
G03,
G60
-
35
-
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