48
Status
Signal
O
utput
T
O
S
8040
7.2.2
E
xample:
U
se of
S
ignals
■
D
riving a
D
C buzzer using a F
AIL
signal
Fig.
7-2
Ex
ample
: U
se
of
FA
I
L
Signal
■
D
riving a lamp using an H.V
ON
signal
Fig.
7-3
Ex
ample
: U
se
of
an
H.V
O
N
Signal
■
O
btaining an
L
-level digital signal at signal output
Fig.
7-4
Conversion
into
a
Logical
Signal
I
n Fig
.
7-
4
,
“
L
”
-
level
o
u
t
pu
t
is
o
b
ta
ined
at
p
o
in
t
“
a
”
at
sign
a
l
o
u
t
pu
t.
Ho
weve
r,
be
ca
use
a
sign
a
l
at
p
o
in
t
“
a
”
co
n
ta
ins
co
n
tact
c
h
att
e
r,
me
a
su
r
es f
or
p
r
even
t
ing
co
n
-
tact
c
h
att
e
r
ar
e
r
equi
r
ed
,
whi
c
h me
a
su
r
es
ar
e
co
mp
at
ible wi
t
h
t
he subsequen
t
c
i
rc
ui
t
to
be
co
nne
ct
ed
.
M
or
e
o
ve
r,
t
he minimum
a
ppli
ca
ble l
oa
d f
or
t
he
co
n
tact
is 5 V
,
10
m
A
or
g
r
e
at
e
r.
Thus
,
se
t
V
+
a
nd R v
a
lues s
o
t
h
at
a
l
oa
d h
a
s
t
his
rat
ing
or
a
b
o
ve
.
Ot
he
r
ca
ses m
a
y
r
equi
r
e
a
ddi
t
i
o
n
a
l me
a
su
r
es
a
g
a
ins
t
n
o
ise
.
T
O
S
80
4
0
30
V
or
less
B
uzze
r
Cl
o
sed
at
F
AIL
judgmen
t
1 A or
less
F
AIL
T
O
S
80
4
0
+
2
4
V
C
O
MM
ON
Cl
o
sed
du
r
ing
t
es
t
ing
100
m
A or
less
La
mp
H.
V
ON
T
O
S
80
4
0
a
V+
L
R
“
Lo
w”
at
sign
a
l
o
u
t
pu
t
5
V
≤
V
+
≤ 30
V
10
m
A ≤
V
+
/R
≤ 1 A