9
COM3-6: Internal RS-232 serial port connectors
Function
PIN
DESCRIPTION
PIN
DESCRIPTION
COM3
1
DCD
2
DSR
3
RXD
4
RST
5
TXD
6
CTS
7
DTR
8
RI
9
GND
10
GND
COM4
11
DCD
12
DSR
13
RXD
14
RST
15
TXD
16
CTS
17
DTR
18
RI
19
GND
20
GND
COM5
21
DCD
22
DSR
23
RXD
24
RST
25
TXD
26
CTS
27
DTR
28
RI
29
GND
30
GND
COM6
31
DCD
32
DSR
33
RXD
34
RST
35
TXD
36
CTS
37
DTR
38
RI
39
GND
40
GND
COM2: Internal RS422/485 Connector
PIN NO.
DESCRIPTION
PIN NO.
DESCRIPTION
1
RXD485#
2
3
4
TXD485#
