I thought I had done it in this thread, I routinely do whenever 485 comess up, but did not di it here.

In links <--- I have plased a link to 'best serial comm appnote site' go there and all the questions will be answered. There is also a diccussion 422 vs 485.

For all 485 users I want to draw attention to the "ten waays to bulletproof a 485".

Erik