UltraPort Serial Adaptors User Guide
Connector box and cable pinouts Page 120
Chapter 3 Cabling information
RJ45 10-pin to DB9 converter
RJ45 pin DB9 Pin EIA-232 EIA-422 EIA-485
1 9 RI RTS+ NC
2 1 DCD CTS- NC
3 7 RTS RTS- NC
4 6 DSR RXD- RXD-
5 3 TXD TXD- TXD-/RXD-
6 2 RXD RXD+ RXD+
7 5 S-GND S-GND S-GND
8 8 CTS CTS+ NC
9 4 DTR TXD+ TXD+/RXD+
10 N/C
Shell Shell C-GND C-GND C-GND