Perle Systems RIO 5500036-17 - Manual (Page 149)

RIO Remote I/O System User Guide
Installing RIO under Linux
Page 149
Chapter 2 Installing hardware and software
10.Your system now has a number of device nodes (/dev/ttySR*) relating to the ports on the
attached RTA's.
Note
When you have installed Remote Terminal Adaptors under Linux, you need to do
the following after powering up the system;
a. Wait for the machine to boot,
b. Login as root
c. Run riomkdev -f to create new port devices in the /dev directory.