PM861 single configuration problems
I have a single system with PM861, and it will communicate other racks via Profibus line(CI840), but I need to ask three questions;
1. Do I have to use BC810? What is this BC810 for? Only for redundant systems?
2. As I read, I need to use TB852 rcu link terminator plug if I am using PM861 in single configuration, but I don't have one. In the document, it says I can use TK851 rcu link cable if the TB852 is not available. But it doesn't describe how to use. So how should I use TK851 instead of TB852?
3. What happens if I don't use battery in PM861?
Sorry for my newbie questions, but if someone helps I will be appriciate.
Voted best answer
1 You don't need the BC810. The BC810 is used with redundant controllers to be able to replace a faulted controller online and one controller can use the Communication interfaces from the other controller. e.g CI854 on upper controller gets a fault the controller can then use ci854 from the lower controller by communicating with it trough the BC810.
2 For enginerring you can do that, for production system order the terminator. Connect the connetor labeled upper from the TK851 rcu link cable to the AC800M.
3 If you loose power to the AC800M the memory will be cleared. If you have a battery if will be retained for a couple of hours and if the power gets back you programms will startup again.