RIO Remote I/O System User Guide
Cable connector pinouts
Page 216
Chapter 3 RIO Cabling information
DB25 male to DB25 female DCE for connection to DTE devices
Typical uses This type of cable is used to connect to DTE de vices such as Terminals, PCs or printers.
Cable diagram
Connector pinout table
Pin 1
(looking into
connector)
Pin 1
(looking into
connector)
DB25 DB25
Pin Signal Direction Description Pin Signal Description
2TXD In Transmit Data 2TXD Transmit Data
3RXD Out Receive Data 3RXD Receive Data
4RTS In Request To Send 4RTS Request To Send
5CTS Out Clear To Send 5CTS Clear To Send
6DSR Out Data Set Ready 6DSR Da ta Set Ready
7GND Ground 7GND Ground
8DCD In Data Carrier Detect 8DCD Data Carrier Detect
20 DTR In Data Terminal Ready 20 DTR Data Terminal Ready