Perle Systems Adaptors - Manual (Page 112)

FAST Serial Adaptors User Guide
Distribution box and cable pinouts
Page 112
Chapter 3 Cabling information
8 port octopus cable with DB25 male connectors
Push fit onto card
edge connector
Port numbers
labelled on DB25
flying lead
Connect peripheral cable
here via DB25 flying lead
DB25 flying leads
connected to card edge
connector.
Pin Signal Direction Description
2 TXD Out Transmit Data
3 RXD In Receive Data
4 RTS Out Request To Send
5 CTS In Clear To Send
6 DSR In Data Set Ready
7 GND Ground
8 DCD In Data Carrier Detect
20 DTR Out Data Terminal Ready
Pin 1 (looking into connector)