You will NOT see the "Digital Channels." You can't. You need to route the Digital Channels through two channels in the FW card - like my pictures illustrate, then set those FW stereo channels as an input on the track. You can't use AES/EBU into PT11 unless you have a dedicated AES/EBU interface. If you have one of those, then you can't use the FW card. This is the ONLY way to get the "processed only" Eleven Rack signal into PT11. If you're looking to get the clean and processed signals (Guitar In, Eleven Rack L., Eleven Rack R., Reamp, Aux In L&R - you have to use the Eleven Rack as the audio interface into PT11.
There ya go!!!