NN3D SOG over NMEA2000

2

25GradySailfish

New member
Hi all,

I recently repowered my boat with 200 suzuki AP's and have twin SMG4 guages connected to a NMEA2000 network.

My issue is I do not have any SOG data in the network, so I cant see mpg or distance traveled.

Is it as simple as adding a Tee on my nema2000 network and connecting it to the NN3D nmea2000 plug to get the speed info?

I will also be adding a simrad ap44 ap (no speed data from this system) to the nema network shortly if that makes any difference.
 
The NN3D12 gets gps data from a Gp-320B antenna, mounted on my t-top. I believe it's connected into the Data 1 port (the NEMA0183 plug. Furthest left on the unit when looking at the unit from the back)
 
I recommend running the setup wizard and going to data port 1 and ensure it is set to GP320B and that on the INPUT of port one is has two checkmarks. One should be date and time and the other should be position. If all looks good there, go to the top tabs of GLOBAL - and the sub tab DATA SOURCES and pull the "position" pull down to select Data 1/GP320B and do the same thing for the "Date and Time" pull down. Once both are set, hit SAVE and EXIT. When you first enter the wizard to get to the NMEA setups, you will be hitting NEXT until you get there. When it says "Searching please wait" there is a SKIP button.. DO NOT HIT IT. Do not skip, let it time out. This should get the configuration setup correctly for the GPS. When you exit and it goes back to normal, check the left icon at the top for GPS. Does it still have an X on it? (make sure the GPS has clear view of the sky of course)
 
Thanks Johnny. I will do that and see what I cant find out.

I should clarify though, currently I have 0 problems with the nn3d and gps data...it all functions as it should and I do not have a red X on the gps icon. I just need to pull that gps data from the nn3d to the nmea2k network so my suzuki smg4 guages and simrad ap44 can receive it.

Everything is unhooked now for safety for installation of the simrad ap44 system, so once I get it all back together I'll fire it up and run the wizard.

If I understand correctly, I need to ensure my INPUT to data1 is GP320 and position and time. And then need to ensure my OUTPUT for NMEA2K is the same...position and time correct?
 
If I understand correctly, I need to ensure my INPUT to data1 is GP320 and position and time. And then need to ensure my OUTPUT for NMEA2K is the same...position and time correct?
Click to expand...

Correct. You should put unique data that is needed for the 2000 bus out by selecting the properly output PGN sentences in the wizard settings for your NN3D 2000 output.

You are correct, if you don't have an X and the NN3D has good data, you only need to configure you output. The same should be said of the output going to the pilot. If the pilot is connected by 2000, the speed data will fix when you output the PGNs. Never turn on PGNs that your NN3D is not the source of. For example, your autopilot might be putting heading out on your 2000 bus. Heading is already on the bus so you would not turn on the heading PGN from the NN3D because if you do it will create a data loop. It would take the existing data, chew it up and delay it and then regurgitate it back on the bus. That isn't something you want. Data flow is important. The summary point is not to just turn on PGN data to the bus all willey knell-y.
 
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