Ken — your autopilot should be sending “fast” (10 Hz) heading info over its NMEA0183 interface; the NMEA0183 data can be converted into NMEA2000 using something like the Actisense NGW-1-STNG:
http://www.actisense.com/products/nmea-2000/ngw-1/ngw-1.html <http://www.actisense.com/products/nmea-2000/ngw-1/ngw-1.html> That unit comes with an adapter cable which needs to be connected to your SeaTalkNG bus. Once you’ve done that, your heading data should be repeated on the SeaTalkNG bus, and should become available to the i60 Wind. There may be some configuration needed on various devices in the chain to make sure everything’s set up properly. — Fred Fred Street -- Minneapolis S/V Oceanis (1979 C&C Landfall 38) -- Bayfield, WI > On Aug 12, 2015, at 11:24 AM, Ken Heaton via CnC-List <cnc-list@cnc-list.com> > wrote: > > Sorry Fred, I wasn't clear. > > I was referring to the true wind display on a Raymatine i60 Wind. Raymarine > Tech online says it needs a source of heading (and speed through the water > which it gets from the i50 Speed already installed) to be able to display > true wind? > > What are possible sources for heading? Can my old Simrad/Robertson Autopilot > provide that info to the i60 with some sort of NMEA 0183 to SeaTalkng > converter? > > Ken H. > > On 12 August 2015 at 10:55, Frederick G Street via CnC-List > <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>> wrote: > Ken — let’s not confuse True Wind Direction with True Wind Angle. Yes, you > would need heading info for true wind direction; but true wind angle is > referenced to the bow of the boat. The "True Wind" vectors that display on > the Raymarine chartplotters are, I believe, just TWA referenced to COG boat > direction if there’s no heading data available from, say, an autopilot > heading sensor. > > Fred Street -- Minneapolis > S/V Oceanis (1979 C&C Landfall 38) -- Bayfield, WI > >> On Aug 11, 2015, at 6:48 PM, Ken Heaton via CnC-List <cnc-list@cnc-list.com >> <mailto:cnc-list@cnc-list.com>> wrote: >> >> I'm pretty sure the Raymarine Wind needs course from an outside source to >> display True Wind. The source of course info could be an autopilot or other >> compass in the system. >> >> I'm sure Fred can confirm that.
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