
Page 26 of 27 The Analyst RS422/RS232 Tester
J. RS422/RS232 Connector Pin Outs
IN PORT, RS232 Connector
DCE configuration, 9 pin DB9F female connector
Pin # Function
Signal
Direction
Pin
#
Function
Signal
Direction
1 DCD Out 6 DSR Out
2 Txd Out 7 RTS In
3 Rxd In 8 CTS Out
4 DTR In 9 RI Out
5 Ground
OUT PORT, RS232 Connector
DTE configuration, 9 pin DB9F female connector
Pin # Function Signal
Direction
Pin
#
Function Signal
Direction
1 DCD In 6 DSR In
2 Rxd In 7 RTS Out
3 Txd Out 8 CTS In
4 DTR Out 9 RI In
5 Ground
IN PORT, RS422 Connector
Device configuration, 9 pin DB9 female connector
Pin
#
Function Signal
Direction
Pin
#
Function Signal
Direction
1 Frame Ground 6 Transmit Common
2 Transmit A (-) Out 7 Transmit B (+) Out
3 Receive B (+) In 8 Receive A (-) In
4 Receive Common 9 Frame Ground
5 Spare
OUT PORT, RS422 Connector
Controller configuration, 9 pin DB9 female connector
Pin
#
Function Signal
Direction
Pin
#
Function Signal
Direction
1 Frame Ground 6 Transmit Common
2 Receive A (-) In 7 Receive B (+) In
3 Transmit B (+) Out 8 Transmit A (-) Out
4 Receive Common 9 Frame Ground
5 Spare
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