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4.6
CAUSE OF FAULTS AND CORRECTIVE ACTION (Cont'd)
I/O
Signal Diagnosis
(1)
When the
cause
of trouble is assumed
to
be in the
I/O
part
of the unit,
it will be possible
to
check
by displaying
the
present
state
of the
1/
O signal.
(2)
Standard
I/O
signal and custom
I/O
signal
The
standard I/O
signal can
be observed by
specifying the diagnosis
No. with the
keys on
the NC
operator
panel.
'
If
a power
sequence
control
option
is
provided as optional,
the
system
will have its
own
characteristic "custom
I/O
signal"
and this
state
can
be observed by setting
an
exclusive
diagnosis
No. in the unit.
For
details,
refer
to your
machine
tool builder's manual.
4.6.3
NC CONTROL
r
TOWER
SEQUENCE
PANEL
ON MACHINE
BASIC
LOGIC
PROCESSING
UNIT
STD.
INPUT S'G
STD
OUTPUT
5ÿÿ
SIDE
I
NC CONTROL
<
<
POWER
SEQUENCE
PANEL
ON MACHINE
SIDE
GUSTO
INPUT
I
iM
SIG
POWER
SEQUENCE
CONTROL
UNIT
BASIC
LOGIC
PROCESSING
UNIT
STD INPUT SIG
CUSTOM
OUTPUT S'C
S
STD
OUTPUT
Fig 4.6.1
YASNAC i 80 M
System
,
-
658
-
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