Perle Systems RIO 5500036-17 - Manual (Page 213)

RIO Remote I/O System User Guide
Cable connector pinouts
Page 213
Chapter 3 RIO Cabling information
DB25 male to DB25 male DTE for connection to DCE devices
Typical uses This type of cable is used to connect to DCE devices such as Modems.
Cable diagram
Connector pinout table
Pin 1
(looking into
connector) Pin 1
(looking into
connector)
DB25 DB25
Pin Signal Direction Description Pin Signal Description
1 Chassis Chassis ground 1 Chassis Chassis ground
2 TXD In Transmit Data 3 RXD Receive Data
3 RXD Out Receive Data 2 TXD Transmit Data
4 RTS In Request To Send 5 CTS Clear To Send
5 CTS Out Clear To Send 4 RTS Request To Send
6 DSR Out Data Set Ready 20 DTR Data Terminal Ready
7 GND Ground 7 GND Ground
8 DCD In Data Carrier Detect 8 DCD Data Carrier Detect
20 DTR In Data Terminal Ready 6 DSR Data Set Ready