PLC S7-1200 and Robot IRB 120 via profibus anybus

Hi. I am a student, I have just received a research topic on communication between PLC S7-1200 and ABB IRB 120 robot via profibus anybus communication network. But now I don’t know where to start, so I would like to ask everyone to share their experiences and documents to help me. Thank you very much

Wow, lot of missing info but to start you can find online documentation here:
https://abb.sluzba.cz/Pages/Public/IRC5RoboticsDocumentationRW6/

Try search for “bus” and you will find application manuals for several bus types.