Not sure I understand your problem but have you already got the server up and running?
Once you've installed the server and have it visible in SMC you can add a PORT_CIP type node. You should then be able to add an ENB_CPLX or ENI_CPLX Object to that node and enter its IP Address. If the controller is pingable from the computer running the server you should have no problem accessing the tags in Intouch, just make sure the topic name matches that of the object / device group in SMC.
I've just recently performed an upgrade of a DASABCIP server running various type of controllers, i.e. ControlLogix, SLC, Flex I/O. I can share the archived config file with you for reference if needed.