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DB9 Pin
RS_232
RJ45 Pin
1
DCD#
2
2
RX#
4
3
TX#
6
4
DTR#
8
5
GND
9
6
DSR#
3
7
RTS#
5
8
CTS#
7
9
RI#
10
- - -
- - -
1
RS232 Pin Definition
Pin
Signal
Pin
Signal
1
Data Carrier Detect
6
Data Set Ready
2
Received Data
7
Request to Send
3
Transmitted Data
8
Clear to Send
4
Data Terminal Ready
9
Ring Indicator
5
Signal Ground