how to integrate s7300 with ac 800f directly via profibus
I have never done communication with S7300, but I see this is case of communication between two profibus master ? for that you need to use some dp to dp coupler inbetween. else it is case of master slave then it is easy and straight forward. for master to master communication if you do not want to buy extra hardware this two controller can communicate over OPC. check associated app here, if that helps...