W&T Electronics RS232 Handbuch Seite 29

W&T
The pinout for the individual ports can be found in the follo-
wing tables.
RS232 input Port A and B with DCE pin functions:
Pin# Function
1 always "on"
2 data out
3 data in
4 handshake in
5 signal GND
6 handshake out
7 not connected
8 handshake out
9 always "off"
RS232 output Port C with DTE pin functions:
Pin# Function
1 not connected
2 data in
3 data out
4 handshake out
5 signal GND
6 not connected
7 always "on"
8 handshake in
9 not connected
Subject to error and alteration
RS232 Universal Serial T-Switch
Signal Direction
DCD output
RxD output
TxD input
DTR input
GND GND
DSR output
RTS input
CTS output
RI output
Signal Direction
DCD input
RxD input
TxD output
DTR output
GND GND
DSR input
RTS output
CTS input
RI input
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