Perle Systems 5500036-17 ユーザーズマニュアル

ページ / 327
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 devices 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
2
TXD
In
Transmit Data
2
TXD
Transmit Data
3
RXD
Out
Receive Data
3
RXD
Receive Data
4
RTS
In
Request To Send
4
RTS
Request To Send
5
CTS
Out
Clear To Send
5
CTS
Clear To Send
6
DSR
Out
Data Set Ready
6
DSR
Data Set Ready
7
GND
Ground
7
GND
Ground
8
DCD
In
Data Carrier Detect
8
DCD
Data Carrier Detect
20
DTR
In
Data Terminal Ready
20
DTR
Data Terminal Ready