Hi,
If the GSD-file that you are using can be put on the Forum then i could look what you are talking about. Most older equipment have only 6 byte diagnostic and so there might be no more. What are you meaning with S1 address?
When i look in the description then it is possible to do some things over Profibus.
I hope that the answer will help, if you have still questions, don't hesitate to ask me.
All the best, Late
Never say never, think in solutions, not in trouble......