I'm trying to establish a wireless Profibus network between a FI830 and a CI830 using Elpro 105 G modems. Any help

I have set up an AC800F controller with a FI830 Profibus master. At a remote location I have S800 I/O with a CI830 slave module. In order to establish a Profibus link, I am using 2 Elpro 105G radio modems. One is set up as a Profibus Master and the other as a Profibus Slave. I have loaded the necessary GSD files on both software applications (ControlBuiderF and Elpro Configuration Utility). I have made some headway, but have now reached a point, where anything I try is unsuccessful.

I am running Freelance version 7.2.