SPEED Serial adaptors User guide
SPEED cables available from Perle
Page 82
Chapter 3 SPEED Cabling information
RJ45 (8pin) to DB25 female cable
Cable diagram
Connector pinout table
Pin 1 (looking into plug)
Pin 1
(looking into
connector)
RJ45 pin
DB25 Pin
Signal
Direction
Description
1
8
DCD
In
Data Carrier Detect
2
6
DTR
Out
Data Terminal Ready
3
20
DSR
In
Data Set Ready
4
7
GND
Ground
5
3
TXD
Out
Transmit Data
6
2
RXD
In
Receive Data
7
5
RTS
Out
Request to send
8
4
CTS
In
Clear to Send
Shell
Shell
Chassis
Chassis ground.