Wolf-Dieter,
I guess you could figure out in the meanwhile how to configure all your Siemens parts in your system.
I would defenitly look on the web from Siemens for some KnowladgeBase or Support articles. On www.ad.siemens.com you might find http://www.ad.siemens.com/profibus/html_76/support/faqs.htm for some profibus FAQs.
Hope this helps
Roland
PS: If you would have some parts from www.ni.com/fieldpoint or the Software based on www.ni.com/labviewdsc I might be a better help 🙂