Com Port Connector (Cn20); Table C-18: Com Port Connector (Cn20) - Advantech PCM-9574 User Manual

C.17 COM port connector (CN20)

Table C-18: COM port connector (CN20)

Pin
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
94 PCM-9574 User's Manual
Signal Pin
DCD1 2
RX1 4
TX1 6
DTR1 8
GND 10
DCD2 12
RX2 14
TX2 16
DTR2 18
GND 20
DCD3 22
RX3 24
TX3 26
DTR3 28
GND 30
DCD4 32
RX4 34
TX4 36
DTR4 38
GND 40
Signal
DSR1
RTS1
CTS1
RI1
NC
DSR2
RTS2
CTS2
RI2
NC
DSR3
RTS3
CTS3
RI3
NC
DSR4
RTS4
CTS4
RI4
NC
40 39
38 37
4 3
2 1