Advantech ARK-3202 User Manual page 20

COM Port / COM3~COM5
The ARK-3202 comes with a D-Sub 26-pin connector that carries COM Port signal,
and can support RS-232, RS-422 and RS485 via internal DIP switch.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
ARK-3202 User Manual
RS-232 RS-422
DCD3 Tx3-
RxD3 Tx3+
TxD3 Rx3+
DTR3 Rx3-
DCD5
RxD5
GND
CTS5
RI5
DSR4
RTS4
CTS4
RI4
DSR3
RTS3
CTS3
RI3
DSR5
RTS5
TxD5
DTR5
DCD4 Tx4-
RxD4 Tx4+
TxD4 Rx4+
DTR4 Rx4-
GND
12
RS-485
D3-
D3+
D4-
D4+