[C320-list] ST4000+ interfacing with NMEA2000 instruments

[Doug Treff]

Well in absence of any input from anyone, I'll be sure to let you all
know how it goes! Might be next season before we get there, though...

--
Doug Treff
doug at treff.us

On Wed, Sep 14, 2016, at 09:18 PM, artstree at aol.com wrote:
> 
> I have a 741 and have used it for two seasons. It is not interconnected
> to
> anything so I can't help in that arena. Besides I am just now getting to
> know my 320  with this being my first season on her. I would like to
> offer
> on comment about the 741 and the touch screen. Touch screens work great
> at
> the dock or in calm conditions but a slight bump during heavy weather or
> waves and you quickly change the screen. It has not been a big issue but
> one I have noticed from time to time. 
> 
> Art Harden
> Tortuga -Catalina 320
> 937-477-5544
> 
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On
> Behalf
> Of Doug Treff
> Sent: Wednesday, September 14, 2016 1:00 PM
> To: c320-list at lists.catalina320.com
> Subject: [C320-list] ST4000+ interfacing with NMEA2000 instruments
> 
> Everyone,
> 
> I am embarking on a refit of most of my electronics in the off-season. I
> have already purchased the major components of the new system:
> 
> Garmin 741 MFD
> Garmin GWind & Depth package with a GMI20 display an additional GMI20
> display
> 
> All of this new gear will of course be interconnected with NMEA2000
> cabling. Pretty straightforward install.
> 
> Here's the tricky part: I am electing to keep my existing (and still
> working) Raytheon ST4000+ Wheel Pilot for now. I'd like to interface the
> ST4000+ with my new gear so that I can steer to waypoints AND apparent
> wind angle. I understand that the Garmin 741 MFD has an
> NMEA0183 port on the back and that I could connect that to my Autopilot.
> What I am unsure about is whether the 741 will also forward wind angle
> information over to the ST4000 so that I can steer a wind angle heading.
> Do you know if that data is sent by the 741 MFD or does it only send
> heading and XTE data?
> 
> If the 741 will not handle sending that data, I have been looking at the
> ActiSense NGW-1 (
> http://www.actisense.com/products/nmea-2000/ngw-1/ngw-1.html ) as a
> possible way to get the setup that I want. It looks like a pretty slick
> way of interfacing single NMEA0183 devices on a boat that is mostly
> converted to NMEA2000.
> 
> I've also seen the Raymarine Seatalk1 to SeatalkNG adapter (
> http://www.raymarine.com/view/?id=400&collectionid=197&col=1597 )and
> thought that might work but it's got more ports than I will realistically
> need for this application.
> 
> Surprisingly, the Actisense product is about twice the cost of the
> Raymarine...
> 
> I was wondering if any you have first hand knowledge of the specific
> situation that I am dealing with, and if you could offer any guidance.
> I have reached out to Garmin to see if they can confirm what data is sent
> from the 741 over the NMEA0183 port, but have not received an answer yet.
> 
> Thanks!
> 
> --
> Doug Treff
> September Song
> Hull #350
> doug at treff.us
> 
>