important setting in redundant cpu

[aliakbar]

we have one redundant q12prhcpu  and i want to know why we should set redundancy item between two cpu .

in all redundant cpu for example siemens and yokogawa  two cpu check all item and do all redundant item .

but i don not understand advantage of setting these item by programmer.

 

[kaare_t]

I'm not familiar with Siemens and Yokogawa PLC's, but what seems to be the problem with the way Mitsu is doing it? You say you have one redundant CPU which kind of doesn't comply with the word redundancy... Are you talking about running redundancy with two normal CPU's? Please elaborate for us to help you...

[Gambit]

This is an option. Less data to sync means more speed. 
If you want to sync all then just select internal device block setting and everything is synchornized