Perle Systems RIO 5500036-17 - Manual (Page 186)

RIO Remote I/O System User Guide
Installing a Long Distance Module (LDM)
Page 186
Chapter 2 Installing hardware and software
Adaptor pinouts for LDU flying lead connectors
Asynchronous Long-wire Connection (DB25 male to DB25 male)
Note
Any connector pins not listed in the next table must not be connected.
DB25 male (host end) DB25 male (remote end)
Pin Signal Description Pin Signal Description
7 GND Ground 7 GND Ground
10 RXD- Inverse RXD 12 TXD- Inverse TXD
11 RXD+ Receive Data 13 TXD+ Transmit Data
12 TXD- Inverse TXD 10 RXD- Inverse RXD
13 TXD+ Transmit Data 11 RXD+ Receive Data
Note
If you are going to build your own Long-wire cable, make sure it conforms to the Category 5
specification.
DB25 female flying lead
to remote site LDU DB25 female flying lead
from host card site LDU
DB25 male to DB25 male
long wire cable as shown
in next table.