I was just looking at my notes from this case and it was regarding an AB7632 EtherNet/IP Adapter- Modbus TCP Server (which is a slave to slave gateway). I think there may be a misunderstanding because you mentioned something about a glitch with being unable to map data. The data on this gateway is “mapped” by the master that writes to the Anybus. You will write to a location on one side and read from the same location on the other side. If you still need help setting that up please let me know.