Hi Henry, I replaced the SmartCraft (Cummins engine data) with a Simrad EVO 3.  The Raymarine (Axiom) and Simrad MFDs talk over the NEMA 2000 data network.  I had the Raymarine E series and it could not interface with the Simrad.  If both of your MDFs have NEMA 2000 and your Raymarine MDF is running the latest lighthouse software, it may work.  With the lighthouse software update for the Raymarine MFD seems to read the data from the Simrad very well.  However, I am primarily interested in engine data.  Not the exact question you asked, but I hope it helps.  JerryNT 37-173Testudo Emeryville CA On Thursday, July 2, 2020, 9:21 AM, hgamsby via Sentoa <sentoa@lists.sentoa.org> wrote: Does anyone know if I can interface my Simrad AP 20 (2003 vintage) with my Raymarine es9 MFD. Would like to get rudder angle and autopilot control Henry GamsbyLYRA37-90 Sent from my Verizon, Samsung Galaxy smartphone _______________________________________________ Sentoa mailing list Sentoa@lists.sentoa.org http://lists.sentoa.org/mailman/listinfo/sentoa_lists.sentoa.org