8
W&T
RS232(/RS422/RS485) Multi Computer Adapter
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
Signal
Direction
1
always "on"
DCD
output
2
data out
RxD
output
3
data in
TxD
input
4
handshake in
DTR
input
5
signal GND
GND
GND
6
handshake out
DSR
output
7
not connected
RTS
input
8
handshake out
CTS
output
9
always "off"
RI
output
RS232 output Port C with DTE pin functions:
Pin#
Function
Signal
Direction
1
not connected
DCD
input
2
data in
RxD
input
3
data out
TxD
output
4
handshake out
DTR
output
5
signal GND
GND
GND
6
not connected
DSR
input
7
always "on"
RTS
output
8
handshake in
CTS
input
9
not connected
RI
input
