6.
PROGRAMMING
/MELSEC-A
(e)
Stop during interpolation operation
During interpolation, both axes are stopped by either the
X-
or the Y-axis stop signal. Where interpolation and dual
operation
are
combined
the
effect of the stop command will
depend on where
in
the
cycle
the
AD71 has reached
(see
below).
4
/-\
Point update
Pattern
01
Pattern
00
A
GU
C
(Interpolation operation) (Dual operation)
axes stop.
If
both axes are working independently
in
area
B
and
a
stop signal is
In
the
above
diagram, if the stop signal
is
received during interpolation, both
receiwd only
the
relevant axis stops. Howaver, if, for example, axis
X
is
procerr-
both axes stop.
ing
area
B
while axis
Y
is
still processing area
C
and
a
stop command
is
received,
Fig.
6.12
Stop
during Interpolation
(2)
Other stop
signals
In addition to
the
four stop
signals
in Table
6.9,
the following
also stop processing while
the
AD71
is
BUSY.
For
all
the follow-
ing,
positioning
is
decelerated to
a
stop and the
GPP
displays an
error message.
~ ~~
Intr-
sigrul
ais
air
2:
Other
Rab.nnt
Imm
VIM
polltion
Op.ratbn
Ready
signal
from
drim
unit
OFF
0
0
0
AD71
bus error
0
0 0
Operation error
(8231
error)
0
7-0
TaMe
6.10
Stop
Signals
(Hardwarel
(3)
Restart
after
stop
Proceed to next address
When
a
sequence of
start
data numbers have been specified
with
a
pointer,
it
will
be
necessary
to
zero the system or to
reset the positioning data after
a
stop signal
is
received.
The above also applies to incremental processing when only
one
start
number
is
specified.
Only in absolute address processing can the system proceed
to the next address after
a
restart.
6-43
1
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18
INN
86101-PI
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