UltraPort Serial Adaptors User Guide
Connector box and cable pinouts Page 119
Chapter 3 Cabling information
RJ45 10-pin to DB25 converter
RJ45 pin DB25 Pin EIA-232 EIA-422 EIA-485
122 RI RTS+ NC
2 8 DCD CTS- NC
3 4 RTS RTS- NC
4 6 DSR RXD- RXD-
5 2 TXD TXD- TXD-/RXD-
6 3 RXD RXD+ RXD+
7 7 S-GND S-GND S-GND
8 5 CTS CTS+ NC
920 DTR TXD+ TXD+/RXD+
10 N/C
1 & Shell 1 & Shell C-GND C-GND C-GNDl