CP180 to Simrad AP question

[Shoalcove]

I installed a new Simrad 2402 Autopilot this spring and have connected it to my Standard Horizon CP180 plotter via the Simrad AT-10 converter. The AP and will steer to a waypoint selected on the CP180 but doesn't show the waypoint name or distance to go on the Simrad display.
Can anyone enlighten me to which NEMA0183 sentences need to be enabled for this to work or if it is even possible? I realize that the plotters port connection has a variety of enabled/disabled sentences that I can access but I don't have a clue which sentences do what. Is there a list that translates the sentence acronym into task?
I did look in both manuals but if the info is there I can't seem to find it.
I'd appreciate any help or suggestions!