Hi but this is an interesting request. First of all, I think it makes sense to ask a question at CODESYS Forge, i.e. in the CODESYS forum.
I just found this about "Redundancy" - could this be from you? https://forge.codesys.com/forge/talk/fo ... it=25#4ab3
I posted a question regarding this topic on Codesys Forge forum but I didn't get any answer. I hope that maybe somebody ran in the same issue using the RevPi controllers. I will certainly try to get the answer and if I solve the problem I'm posting the solution here.