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NMEA 2000 & MFD integration guide

1. Introduction

1.1 Summary

This technical document explains how to integrate a Victron system onto a Marine MFD, such as those from Garmin, Raymarine, the Navico brands B&G, Simrad and Lowrance as well as Furuno other brands.

There are multiple options, and how to best integrate depends on the customer requirements, MFD brand and model as well as used Victron components.

Make sure to closely read this full document to find the best method for your type of system.

1.2 What is NMEA 2000?

NMEA2000 is a communications standard used for connecting marine sensors and display units within ships and boats.

Victron Energy is a member of the NMEA 2000 organisation, and we have several of our products certified by NMEA 2000.

NMEA 2000 is sometimes also refered to as N2K, for brevitiy.

1.3 What is the MFD HTML5 App?

The MFD HTML5 App is a very simple to install and setup integration into all main brands of Marine MFDs. Truly plug-and-play: once the Victron GX Device and the MFD are connected via ethernet, a Victron logo will appear in the App menu of the MFD. Behind that button, there is a page to monitor and control the Victron Energy system.

1.4 Other integration options

This document only covers integration via NMEA2000 as well as the MFD HTML5 App. There are two other alternatives, commonly used to integrate Victron equipment in a Marine applications.

First of all Modbus-TCP. Typically used on larger vessels, Modbus-TCP is a protocol commonly used for (custom) designed SCADA systems. The Victron GX devices all support the Modbus-TCP protocol. More information in the GX Modbus-TCP Manual.

The other alternative is SignalK. More information about that in the Venus OS Large manual. Do take note of the chapter on Support in that document.

2. Integration details

2.1 Systems with a GX Device

For most installations and integrations, it will be best to use one of our GX Products. It acts as a hub, collecting information from connected equipment, such as Inverters, Battery Monitors and Chargers; and then making them available to the MFD.

There are two ways to connect a GX Device to a MFD:

- the (simpler) plug and play like method uses an Ethernet connection, which enables the MFD HTML5 App. Available for Raymarine, Garmin, as well as the Navico brands B&G, Lowrance and Simrad. Click those links to go straight to all information, videos and manuals. - in an the NMEA2000 network. See the NMEA 2000 chapter in the Cerbo GX manual for details.

Both connections can be made and used at the same time, and each has its advantages and disadvantages:

The MFD HTML5 App is the simplest to setup as its pure plug and play. It presents an easy to use system overview without requiring any configuration. The system overview shown will automatically adapt to the type of Victron system installed. The (only) available configuration is defining the batteries as well as giving them names.

The NMEA 2000 integration is more complex, and allows more customisation on the MFD: the data will show up in the data-tree of the MFD, and most MFDs then allow the user to configure various pages and combinations of information.

Note that, besides making information available on NMEA 2000, a GX Device can also read tank level data from NMEA 2000. More information in the NMEA 2000 tank sender section in the CCGX Manual.

2.2 Direct connection - products with a VE.Can port only

Some of our products feature a VE.Can port; which can be directly connected to the NMEA 2000 network. No electronic converter is necessary. The conversion cable required is the VE.Can to NMEA2000 cable.

2.3 Tank monitoring


Here explain that tank levels can be measured by Victron GX devices as well as GX Tank 140. And then made available to the MFDs via N2K PGNs, details in NMEA2000 out chapter in the manual.

And the other way around: tank data available on NMEA2000, originating from non-Victron tank senders can be read into the Victron system as well as made available remotely through VRM. Details about compatibility and limitations in the GX Manual:

2.4 Using our converter interfaces (DEPRECATED!)

Note that the use of both those interfaces is deprecated. Use a GX device instead.

3. Varia

3.1 VE.Can products (Skylla-i, Skylla-IP44, Lynx Shunt, Lynx Ion+Shunt and more)

Since the Victron VE.Can communication protocol is based on N2K, the following products can all be connected directly to a N2K network. The only thing necessary is a plug converter: the VE.Can to NMEA 2000 cable.

  • Skylla-i 24V Battery Chargers
  • Skylla IP44 Battery Chargers
  • Lynx Shunt Battery Monitors
  • Lynx Ion + Shunt all models
  • SmartSolar MPPT Solar Chargers with VE.Can communications port

3.2 Raymarine & EmpirBus

Besides using NMEA 2000 and/or the Lighthouse App, integration onto Raymarine MFDs can also be done with an Empirbus NXT MCU . Though both are connected to the same N2K network, the NXT MCU translates the N2K PGNs originating from the Victron equipment into Raymarine proprietary messages.

In the EmpirBus Studio software you will find dedicated Victron building blocks than can be drawn onto the diagram.

Next, use the EmpirBus Graphical tool to design the pages for on the Raymarine MFDs.

The EmpirBus system requires the data instance of battery status and dc detailed status to be unique when using multiple sources. (how to change data instances)

3.3 Maretron

All data sent out by Victron devices can be picked up by the Maretron MFDs & software. See the Maretron N2KView® vessel monitoring and control software.

4. NMEA2000 PGN overview

Refer to our Datacommunication whitepaper, page 8 and beyond, for a list of Victron products and their supported PGNs.

5. FAQ

Note that there are many more generic frequently asked questions answered in the Data communication white paper.

Q1: What about instances? Device instances, data instances?

See Changing NMEA2000 instances for details on that.

Q2: What about terminators and network layout?

A N2K CAN bus network needs to be laid out as in a backbone configuration, using drop cables to connect to each device. Also, there should be only two terminators in the network. Therefore:

Q3: What PGNs does a GX Device transmit on N2K?

Q4: Can integration onto Raymarine displays also be done without Empirbus NXT?

ve.can/nmea-2000/start.1615813583.txt.gz · Last modified: 2021-03-15 14:06 by mvader