Raymarine MFD won't recognize fuel sensor

alnav said:
John, in the interest of us Garmin guys not totally hijacking your thread, I found this article about fuel flow data display problems that might help:
https://forum.raymarine.com/showthread.php?tid=6833
Click to expand...

I read through that link and it gets a little deeper than I normally swim. My Raymarine is a "Lighthouse II" system but I'm a little over my depth trying to find the page they show in that link.
 
Correct me if I'm wrong but fuel flow from PGN 127489 must come from the engine's data stream right?
Fuel levels must come from PGN 127505 from a different device such as the Smartcraft SIM / Vessel View.
Fuel flow from an external device may be propriety PGN or is there a unique one?

I do know that the Maretron fuel flow meters use proprietary PGN's 065286 and 065287.
 
Here you go from Maretron for their FFM100
upload_2022-4-29_9-54-26.png
 
With Raymarine, when it comes to N2K, it either works or it doesn’t, and unless your using the exact equipment they specify, it doesn’t. My guess is those sensors are outputting a different PGN or the format isn’t what Raymarine is looking for.

Edit: or they are transmitting proprietary PGN…

To get down to the heart of it, you could get a N2K gateway and use something like Maretron N2KAnalyzer to look at what those sensors are transmitting. But at the end of the day, you can’t program Raymarine N2K to match.
 
ttmott said:
Correct me if I'm wrong but fuel flow from PGN 127489 must come from the engine's data stream right?
Click to expand...

Yes, from field 6

127489 Engine Parameters, Dynamic
Field # Field Description
1 Engine instance
2 Engine oil pressure
3 Engine oil temp.
4 Engine temp.
5 Alternator potential
6 Fuel rate
7 Total engine hours
8 Engine coolant pressure
9 Fuel Pressure
10 Not Available
11 Engine Discrete Status 1
12 Engine Discrete Status 2
13 Percent Engine Load
14 Percent Engine Torque

Fuel levels must come from PGN 127505 from a different device such as the Smartcraft SIM / Vessel View.
Fuel flow from an external device may be propriety PGN or is there a unique one?
Click to expand...

Yes from any device that can transmit that PGN, like SC or VV and including Maretron TLM100's

I do know that the Maretron fuel flow meters use proprietary PGN's 065286 and 065287.
Click to expand...

The funny part about this is Flo-Scan uses PGN 65280 and PGN 65281 which are J1939 PGN's and what developed into NMEA2000.

Fuel management still seems to be handled differently by each manufacturer.
 
Halfhitch said:
The Raymarine e127 shows this for detail on the sensors. I don't see anything about a PGN number.
...
The fuel flow sensors are from Lowrance. They call them EP-10. They are of course connected to the N2K backbone because the MFD has them on the device list. Here is a link.
https://media1.svb-media.de/media/s...08-14-14_dad997e8e9db9ce658c96a8bac5607de.pdf
Click to expand...

So I believe your issue may be as simple as instance numbering. Although I can not seem to find what PGN the EP-10 transmits. Setting the instance number is simple, but being able to set it is not. Does the e127 allow you to edit the devices at all? If so set the port instance number to to engine 1 and instance 0, set the stb. to engine 2 and instance 1 and that might fix your issue.

Typically if the MFD does not allow you to edit N2K devices then you need the manufacturers setup or you can use Maretron's N2Kanalyzer which also requires additional expensive hardware.
 
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If you really want fuel flow, range, DTE and all that good stuff, I’d seriously consider Maretron. It would be about a boat buck in hardware, but it would be easier to program, and almost guaranteed to work. If using all Maretron, I’d say Guaranteed to work 100%

I say almost guaranteed because Raymarine can be a PITA with this. I know first hand…I’m still trying to display EGT on the Axiom, and while technically supported, I’ve never found a way to display it.
 
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I read that whole thread from THT and WOW, what a bunch of stuff to go through. The easier way may be to just marry that Barbara from Lowrance Tech support.

I do appreciate you guys posting that stuff about orientation of the sensors being important. I had not seen that before. I do remember now though, many years ago I mounted a "Flow Scan" sensor and the instructions recommended the fuel flow direction should be angled up slightly. I will check these. They are vertical but I'm not sure if the arrow is pointed up. That of course is not the reason I am seeing no info on the Raymarine.
 
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dtfeld said:
Just reading up on these sensors, looks like they need to be connected to a Lowrance unit, programmed, and the calibrated. That “app” might be proprietary to Lowrance, or you might be able to program it with N2KAnalyzer. Even with a Lowrance unit connected, seems a little flaky…

https://www.thehulltruth.com/marine...d-help-w-lowrance-ep-10-fuel-flow-sensor.html
Click to expand...

I have a lowrance LMF-400 in the boat that these sensors are connected to. It reads the info using N2K. I want the info on my MFD if I can get it because the LMF-400 is difficult to read and a kind of a pain to do refill duties.
https://www.lowrance.com/help-and-s...nit-and-Accessory-Information&guideId=002-663
 
Seems like to me you might need to take the original error message at face value. I think you have two engines Raymarine is looking for, even though you only have one piece of data per engine rather than multiple PGNs from a regular gateway. On a quick search, I see there is an engine set up wizard. You might try running that and see what happens.
 
Halfhitch said:
I have a lowrance LMF-400 in the boat that these sensors are connected to. It reads the info using N2K. I want the info on my MFD if I can get it because the LMF-400 is difficult to read and a kind of a pain to do refill duties.
https://www.lowrance.com/help-and-s...nit-and-Accessory-Information&guideId=002-663
Click to expand...

Did you run the engine or fuel setup wizards? I don't recall how this is done in LH2, but there is a wizard in LH3. Doing so may connect/setup the right parameters.
 
dtfeld said:
Did you run the engine or fuel setup wizards? I don't recall how this is done in LH2, but there is a wizard in LH3. Doing so may connect/setup the right parameters.
Click to expand...

No, I didn't. I went in to the fuel manager and set the tank size, number of tanks, number of engines and such but didn't see a wizard option. I'll check into that. Thanks.
 
ttmott said:
Can you pull up the PGN for fuel flow on the DSM?
I'll be at the boat to start the refer and freezer replacements today and will look also.
Click to expand...
alnav said:
Tom, not sure but will check. I have a DSM Fuel Management screen that shows consumption, total fuel, trip fuel used and DTE, all calculated from fuel flow.
Click to expand...

Tom, I played with the Maretron today and configured a new screen with fuel flow by engine along with the Maretron-calculated Fuel Consumption and Fuel Economy PGNs. I'd like to have a combined flow rate like Garmin supplies and intend to work on it tomorrow as it looks like we're getting rain all day.
Maretron Fuel Rate.jpeg
 
alnav said:
Tom, I played with the Maretron today and configured a new screen with fuel flow by engine along with the Maretron-calculated Fuel Consumption and Fuel Economy PGNs. I'd like to have a combined flow rate like Garmin supplies and intend to work on it tomorrow as it looks like we're getting rain all day.View attachment 125488
Click to expand...
Is this from the Maretron fuel meters or engine data and if from engine data, what menu in the DSM did you find that?
 
ttmott said:
Is this from the Maretron fuel meters or engine data and if from engine data, what menu in the DSM did you find that?
Click to expand...
Tom, my fuel flow data comes from the engines. I can see the fields in the VV System...Network... Source and ...Device List...VV4...Data menus:
VV Data List Fuel Rate.jpeg
VV Engine Fuel Flow.jpeg


I found the DSM setup confusing at first. There is a "Fluid Flow" data type that looked like the obvious choice, but proved to provide no data in my case. I suspect it may be for Maretron devices.
Turns out there are two other data types that provide what I wanted:

To display flow by individual engine, first select the "Engine" data type, then Fuel Flow:
DSM Engine Fuel Rate.jpeg

For totals, select the "Fuel Management" data type:
Maretron Fuel Mgmt Field.jpeg
 
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