How to configure Edgeport/1i for rs 485 in Linux?

I have an Edgeport/1i that I want to use for rs485 communication from a linux system.

The Edgeport/1i is automatically detected when I plug it in and is assigned to ‘/dev/USB0’. How to I tell the Edgeport/1i to use rs485? Some google searches showed references to the programs ‘ionmode’ and ‘ionmode_menu’. But these are not on my system.

I’m using ubuntu 11.04 (actually xubuntu).

$ uanme -a
Linux ubuntu 2.6.38-13-generic #52-Ubuntu SMP Tue Nov 8 16:48:07 UTC 2011 i686 i686 i386 GNU/Linux

I’m currently working towards trying ubuntu 11.10, but I expect to have the same question with that release.

Contact Digi Technical Support they will be able to help you out.