RS232 w/DB9 Cable Pinout


DB-9 Male Plug

RS232 DB-9
PIN
FUNCTION
DESCRIPTION
1
DCD
Data Carrier Detect
2
RX
Receive
3
TX
Transmit
4
DTR
Data Terminal Ready
5
GND
Signal Ground
6
DSR
Data Set Ready
7
RTS
Request To Send
8
CTS
Clear To Send
9
RI
Ring Indicator


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