what PDF to use in learning software redundancy?

Raednabeel

Dear All,

In software redundancy , one have to use - FB101 ‘SWR_ZYK’- at the beginning and at the end of the backup PLC program , as described in the PDF .

If the backup PLC program exists on many OBs - lets say OB1 and OB35 - must I use the FB101 in both locations , OB1 & OB35 with same procedure described above ?

I hope you can help.

With my Respect