Profibus for Dummies

We have a new system that uses a Beckhoff computer and CoDeSys. We also have an extensive Allen Bradley plc system CLX,PLC-5, and SLC 5-04 and 5-05's. We also have Factory Talk Transaction manager(RSSQL) that we are collectind data from. My question is does any one have any experience with a third part module such as the slave modules that Prosoft build to bring data from a profibus system into an Allen Bradly processor that RSSQL can deal with.