RS-232
Connections
Manual Documentation Number: LPD40xA-1105m
45
Black Box Corporation - 1000 Park Drive - Lawrence, PA 15055-1018
www.blackbox.com
-- Tech Support and Ordering: 724-746-5500 - Fax: 724-746-0746
A
A
p
p
p
p
e
e
n
n
d
d
i
i
x
x
D
D
:
:
R
R
S
S
-
-
2
2
3
3
2
2
C
C
o
o
n
n
n
n
e
e
c
c
t
t
i
i
o
o
n
n
s
s
DB-9M
Pin
Signal RS-232
DTE
1 Carrier
Detect
DCD
In
2
Receive Data
RXD
In
3
Transmit Data
TXD
Out
4
Data Terminal Ready
DTR
Out
5
Signal Ground
GND
---
6
Data Set Ready
DSR
In
7
Request To Send
RTS
Out
8
Clear To Send
CTS
In
9 Not
Connected NA
NA
Figure 21. RS-232 Connections in a DB-9 Connector
Содержание LPD401A
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