Cable Connectors and Pin-outs
RS-232 9-pin Male Connector Pin-Out
RS-232 9-Pin
Function
Male
Connector
1
Not Connected
2
RXD
3
TXD
4
Not Connected
5
GND
6
Not Connected
7
Not Connected
8
Not Connected
9
Not Connected
RS-232 9-pin Female Connector Pin-Out
RS-232 9-Pin
Function
Female
Connector
1
Not Connected
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
Not Connected
A-2
Direction
Direction
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