4 connecting rs-232c – KEYENCE BL-600 Series User Manual
Page 30
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Chapter 3 Connection and Installation
20
3
I/O circuit diagram
■ Input circuit diagram
■ Output circuit diagram
3.1.4 Connecting RS-232C
Pin assignment of the RS-232C port
The BL-U1 has a RS-232C port with the following pin assignment.
■ RS-232C port pin assignment
TIM
2.4
k
Ω
3.3 k
Ω
Internal circuit
+
+
Load
OK/NG
COM
+
Internal circuit
13
1
25
14
RS-232C port
D-sub 25-pin (female)
DTE specification (defined as terminal)
M2.6 screw (female)
.
o
N
n
i
P
l
o
b
m
y
S
n
o
i
t
c
n
u
F
l
a
n
g
i
S
n
o
i
t
c
e
r
i
d
1
G
F
d
n
u
o
r
g
e
m
a
r
F
—
2
)
D
X
T
(
D
S
a
t
a
d
C
2
3
2
-
S
R
s
d
n
e
S
t
u
p
t
u
O
3
)
D
X
R
(
D
R
a
t
a
d
C
2
3
2
-
S
R
s
e
v
i
e
c
e
R
t
u
p
n
I
4
)
S
T
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(
S
R
)
N
O
s
y
a
w
l
a
(
a
t
a
d
C
2
3
2
-
S
R
d
n
e
s
o
t
t
s
e
u
q
e
R
t
u
p
t
u
O
5
)
S
T
C
(
S
C
a
t
a
d
C
2
3
2
-
S
R
d
n
e
s
o
t
y
d
a
e
R
t
u
p
n
I
6
)
R
S
D
(
R
D
.
e
d
i
s
n
i
0
2
.
o
N
n
i
p
o
t
d
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t
c
e
n
n
o
C
t
u
p
n
I
7
)
G
S
(
D
N
G
d
n
u
o
r
g
l
a
n
g
i
S
—
0
2
)
R
T
D
(
R
E
.
e
d
i
s
n
i
6
.
o
N
n
i
p
o
t
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c
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n
n
o
C
t
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p
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O
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