
Shenzhen Maxtang Computer Co., Ltd
11
Signal
Pin
Signal
RI#_3
9
10
(NC)
DCD#_4
11
12
RXD_4
TXD_4
13
14
DTR#_4
GND
15
16
DSR#_4
RTS#_4
17
18
CTS#_4
(NC) / VCC(5V/12V)
19
20
(NC)
DCD#_5
21
22
RXD_5
TXD_5
23
24
DTR#_5
GND
25
26
DSR#_5
RTS#_5
27
28
CTS#_5
RI#_5
29
30
(NC)
DCD#_6
31
32
RXD_6
TXD_6
33
34
DTR#_6
GND
35
36
DSR#_6
RTS#_6
37
38
CTS#_6
RI#_6
39
40
(NC)
When COM6 is set as RS232 and RS485, the header definition is as follows:
Pin
RS232
RS485
1
DCD#
DATA
-
2
RXD
DATA+
3
TXD
(NC)
4
DTR#
(NC)
5
GND
GND
6
DSR#
(NC)
7
RTS#
(NC)
8
CTS#
(NC)
9
RI#
(NC)