CHAPTER 1 - Overview
Pinouts
DX40 Serial Device Router Installation Guide
8
1.4.3 DB9 (Female) – RS232 Serial Ports
Table1-10 defines the pinout of the DB9 female connector used with serial ports on the
DX40 when they are configured for the RS232 interface. DB9 connectors are used on
serial ports S1 and S2 for asynchronous or bit-oriented connections.
1.4.4 DB9 (Female) – RS485 Serial Ports
Table1-11 defines the pinout of the DB9 female connector used with serial ports on the
DX40 when they are configured for the RS485 interface.
Table1-10. DB9 RS232 Pinout
Pin Name Dir. Description
1 DCD In Data Carrier Detect from DCE.
2 RXD In Receive Data from DCE.
3 TXD Out Transmit Data to DCE.
4 DTR Out Data Terminal Ready to DCE.
5 GND Pwr Signal Ground.
6 DSR In Data Set Ready from DCE.
7 RTS Out Request To Send.
8 CTS In Clear To Send.
9 RI In Ring Indicato r from DCE.
123 4 5
6789
S1/
S
S1/S2
Table1-11. DB9 RS485 Pinout
Pin Signal Direction
1RX- In
2RX+ In
3TX- Out
4TX+ Out
5GND Power
6Not Used
7Not Used
8Not Used
9Not Used
123 4 5
6789
S1/
S
S1/S2