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2.4.20
COM Port (CN26)
Pin
Pin Name
1
DCD_1
2
DCD_2
3
RX_1
4
RX_2
5
TX_1
6
TX_2
7
DTR_1
8
DTR_2
9
GND
10
GND
11
DSR_1
12
DSR_2
13
RTS_1
14
RTS_2
15
CTS_1
16
CTS_2
17
RI_1/12V/5V
18
RI_2/12V/5V
Chapter 2 – Hardware Information
Signal Type
TX_1-
TX_2-
TX_1+
TX_2+
RX_1+
RX_2+
RX_1-
RX_2-
GND
GND
Signal Level
DATA_1-
DATA_2-
DATA_1+
DATA_2+
GND
GND
30
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