I have an existing SLC system that we are planning on putting a new CLX processor on top of. My question is how to address the following SLC IO in Logix. I have two racks of SLC IO each are 13 slot racks, the first rack slot 0 had the SLC 505 which will now be a 1747-ASB. I am using a 1756-DHRIO card to talk to the IO but I am not sure how to address these two racks in logix. The second rack is an expansion rack, but I think I am going to have to add virtual ASB modules into logix to address the SLC IO even though the do not really exist because Logix can only see 8 cards at a time. Am I on the right path here? Any advise would be greatly appreciated.