YASKAWA yasnac i80m Instruction Manual page 229

•(
Example of Programming
")
GS1 CyS GOO
Z
-
50. R
-20.
F3(.i
LO
;
G 72 X
70. Y 3 0
.
I
_'5.
J 1
5. 5 LG ;
GSO GOO XO
YO
;
6
r.
END POINT
4
:<
l=L'5min
X =
/iinmi
.1=15.5*
L*
1
l
Y=3ftmni
Fig. 2.13.19 Line
at Angle
Command (G72)
-
NOTE
—
O For a hole-opening cycle
to
be
executed using G70, G71, or G72, a
canned
cycle where L = 0
(G73, G74, G76, G77, G81
to
G89)
must, as a rule,
be commanded in the preceding block
as
shown
in the
program
example
above. By definition of L
=
0,
the canned cycle
movement
is
not exe¬
cuted
at
that position
and hole machining
data
are
entered.
0
G70, G71, or G72 and the canned cycle G code
can
be commanded in
the same block. However,
a
canned cycle
(G73, G83)
containing I, J,
or K commands
cannot
be commanded in the same block.
When using
G73
or
G83,
and
2-step
hole canned cycle (G18U
G182, G185, G186,
G187
or
G189) be
sure to use
Q
or
command
I.J.or
K in the previous
block
in
advance.
©
Because
G70, G71.
or
G72 machining is completed
on
the last hole, if
the tool is
to
be moved
to
the
next
position, it is
necessary
for the G91
(incremental) mode
to
calculate that position. G90
(absolute) mode is
more convenient because it is
not a
necessary
calculation.
O
When
G70, G71, or G72 machining is completed, the
system
remains
in the canned cycle mode. Attention
must
be paid
to
the
program
in
the
next
block. Generally, it is
necessary to cancel the mode with G80.
0
If G70, G71, or
G72 is commanded in
nose
radius
compensation (G41,
G42), alarm "182" results.
0
G70, G71, and G72 are
non-mod al G codes.
0
G70, G71, and G72
must always be
commanded in
a
canned
cycle mode
(otherwise, alarm "171"
results).
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205
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