Db-9 port pin assignments, Console port to 9-pin com port on pc – Planet Technology WGS3-404 User Manual
Page 261
WGS3 Layer 3 Switch User’s Manual
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DB-9 Port Pin Assignments
EIA Circuit
CCITT
Signal
Description Switch’s DB9
DTE Pin #
PC DB9 DTE
Pin #
Modem DB25
DCE Pin #
Signal
Direction
DTE-DCE
CF
109
DCD (Data
Carrier
Detected)
1 1 8
<------
BB
104
RxD
(Received
Data)
3 2 3 <------
BA 1033
TxD
(Transmitted
Data)
2 3 2 ------>
CD 108
DTR
(Data
Terminal
Ready)
6 4 20
------>
AB 102
SG
(Signal
Ground)
5 5
7 -------
CC
107
DSR (Data
Set Ready)
4
6
6
<------
CA 105
RTS
(Request-to-S
end)
8
7
4
------>
CB 106
CTS
(Clear-to-Sen
d)
7
8
5
<------
CE 125
RI
(Ring
Indicator)
9
9
22
<------
Console Port to 9-Pin COM Port on PC
Switch’s 9-Pin Serial Port
CCITT Signal
PC’s 9-Pin COM Port
1 DCD
----------- DCD ------------
1
2 TXD
----------- RXD ---------->
2