Berger Lahr TLC 511-F + Siemens S7-300

I'm currently working on a project for my company. I have to program a S7-300 ( CPU 315-2DP), or better, I have to developpe a function (block), so that you can type in a value of a parameter for the TLC 511-F and this one is set in the TLC. The TLC controlls a sig-positec motor. The S7 and the TLC are connected via Profibus and I don't know how I can work on. How can I program this and in which format shall I sent the parameter values?
Does anyone of you have documentations, infos etc... or even programs for S7 for this?

Thanks