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No depth on Garmin721
Posted: Wed Aug 09, 2023 2:58 pm
by Bean
How come the depth and temp don't show up on my Garmin 721? They are just blank.
Re: No depth on Garmin721
Posted: Wed Aug 09, 2023 4:28 pm
by bruceb58
Check the connection of the NMEA 2000 bus at both the transducer and the back of the Garmin.
You can go into Settings and look at the NMEA 2000 setup and see what devices are on the NMEA 2000 bus.
Re: No depth on Garmin721
Posted: Wed Aug 09, 2023 5:54 pm
by Bean
Depth and temp are showing up on the boat's gauges. Go into settings on the Garmin? Sorry, this is my first experience with this setup.
Re: No depth on Garmin721
Posted: Sat Aug 12, 2023 12:03 pm
by Bean
I just have one cable going to the Garmin. No others hanging around. On settings it says no NMEA 2000 devices. Port 2 is empty. I guess I'm out of luck. While I was under there I found a switch for accent lights I didn't know I had!
Re: No depth on Garmin721
Posted: Sat Aug 12, 2023 1:57 pm
by Norris_Boating
What temp are you referring to? Air? Water? Engine? In the Garmin settings there are a variety of temp functions, though I thought only one depth setting.
Post a picture of your gauges
Re: No depth on Garmin721
Posted: Sun Aug 13, 2023 5:14 am
by Bean
Dash.jpg
Air and water temp. I guess I don't have the proper cables.
Re: No depth on Garmin721
Posted: Mon Aug 14, 2023 6:47 am
by Kate
For the engine data, did you install an "engine-specific gateway"? See the Garmin site.
Re: No depth on Garmin721
Posted: Tue Mar 11, 2025 8:12 am
by OzCobaltR5
Hey Bean
Just got a 2013 R5 8.2 merc seacore. Same gauges as yours. Did you ever find the nmea interface from the engine? I can see the square plugs on the back of the round analogue/digital gauges are obviously getting data from the engine but not sure what protocol they are running. I want to upgrade the garmin chartplotter to something a bit more recent with hd sonar. Thanks mate. R5 downunder
Re: No depth on Garmin721
Posted: Tue Mar 11, 2025 5:00 pm
by AsLan7
So glad you found us OCR5…
Thank you for the pictures as well. We love them here.
Welcome aboard mate.
.
Re: No depth on Garmin721
Posted: Tue Mar 11, 2025 8:33 pm
by bruceb58
OzCobaltR5 wrote: Tue Mar 11, 2025 8:12 am
Hey Bean
Just got a 2013 R5 8.2 merc seacore. Same gauges as yours. Did you ever find the nmea interface from the engine? I can see the square plugs on the back of the round analogue/digital gauges are obviously getting data from the engine but not sure what protocol they are running. I want to upgrade the garmin chartplotter to something a bit more recent with hd sonar. Thanks mate. R5 downunder
Assuming the Garmin is using CAN bus data from the engine, there should be a CAN to NMEA gateway somewhere...usually behind the dash.