RS232 Pinout 9-D Type

Pin
Signal
Function
Direction
1
DCD
Carrier Detect
INPUT
2
RX
Receive Data
INPUT
3
TX
Transmit Data
OUTPUT
4
DTR
Data Terminal Ready
OUTPUT
5
GND
Signal Ground
Common
6
DSR
Data Set Ready
INPUT
7
RTS
Request To Send
OUTPUT
8
CTS
Clear To Send
INPUT
9
n/c
-
 

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