What are the pinouts to go from the RJ45 serial port of an XPress-DR or XPress-DR-IAP to the DB9 Serial port of my device?

Here are the pinouts for a DTE and DCE device:

To connect to a male DB9 DTE (e.g. the Com port on a PC):
 

XPress-DR
RJ45                   DB9F   Signal
N/A 8-------------------
RTS 7-------------------8     CTS
CTS 6-------------------7     RTS
GND 5-------------------5     Signal Ground
TX  4-------------------2     RX
RX  3-------------------3     TX
DTR 2-------------------6     DSR (Possibly DCD depending on customers device)
N/A 1-------------------




To connect to a female DB9 DCE:

 


XPress-DR
RJ45                   DB9M   Signal
N/A 8-------------------
RTS 7-------------------7     RTS
CTS 6-------------------8     CTS
GND 5-------------------5     Signal Ground
TX  4-------------------2     TXD
RX  3-------------------3     RXD
DTR 2-------------------4     DTR
N/A 1-------------------

[Originally Published On: 12/31/2000 07:39 PM]