Loopback pinouts for db25 male connectors, Main menu – Perle Systems RIO 5500036-17 User Manual
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RIO Remote I/O System User Guide
Loopback connector pinouts
Page 225
Chapter 3 RIO Cabling information
Loopback pinouts for DB25 male connectors
To test this type of port, your loopback connector needs to join together the connector pins
shown in the next picture.
For details of DB25 male connector pinouts see
2
3
4
5
6
8
20
22
TXD
RXD
RTS
CTS
DSR
DCD
DTR
RI