Startup Manual
3
Pin Assignments of RS-232 DB9 Connector
Pin Assignments of RS-422/485 DB9 Connector
Pin Assignments of RS-422/485 Configuration
Pin
RS-232
1
DCD
2
RxD
3
TxD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
Pin RS-422/485
1
TX-(DATA-)
2
TX+(DATA+)
3
RX+
4
RX-
5
GND
6
RTS-
7
RTS+
8
CTS+
9
CTS-
Pin
Description Pin
Description
Port 0
Data-
1
TX-
2
RTS-
Data+
3
TX+
4
RTS+
5
RX+
6
CTS+
7
RX-
8
CTS-
9
GND
10
NC
Port 1
Data-
11
TX-
12
RTS-
Data+
13
TX+
14
RTS+
15
RX+
16
CTS+
17
RX-
18
CTS-
19
GND
20
NC
Port 2
Data-
21
TX-
22
RTS-
Data+
23
TX+
24
RTS+
25
RX+
26
CTS+
27
RX-
28
CTS-
29
GND
30
NC
Port 3
Data-
31
TX-
32
RTS-
Data+
33
TX+
34
RTS+
35
RX+
36
CTS+
37
RX-
38
CTS-
39
GND
40
NC
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