This is the wiring schematic for the RJ45 to DB9 female adapter for the CB-EL1 RS232D port on the board.
RJ45 Plug Side
DB9 Female Side
2
RXD
3
TXD
5
GND
7
RTS
8
CTS
This is an image of an RJ45 to DB9 adapter with the above wiring. The DB9 port is female to attach to a standard PC male port.