How do you set up a redundant optical ring with two OLMs and what LED display behavior is to be expected?

For more threads on the subject, I suggest you use the search function on the forum (look at the top right of this page)using "Profibus redundant ring" as a search term, for example. If you then refine the search by opening the FAQ and Manuals linksyou will have access to a great deal of recommendations from Siemens Support and forum participants.

Hope this helps,
Daniel Chartier