2.6.27 COM Port 1 ( D-SUB 9) (CN27)
P in
P in Name
1
DCD
2
RX
3
TX
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
2.6.28 Battery CONN (CN28)
P in
P in Name
1
+3.3V
2
GND
Chapter 2 – Hardware Information
Sig nal Type
IN
IN
OUT
OUT
GND
IN
OUT
IN
IN
Sig nal Type
PWR
GND
Sig nal Level
±9V
±9V
±9V
Sig nal Level
3.3V
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