Garmin GPSMAP 4008, GPSMAP 541, GPSMAP 4012, GPSMAP 4208, GPSMAP 4212 Technical Reference

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Technical Reference

for Garmin

®

NMEA 2000® Products

© 2009 Garmin Ltd. or its subsidiaries

Garmin International, Inc.
1200 East 151st Street,
Olathe, Kansas 66062, USA
Tel. [phone] or [phone]
Fax [phone]

All rights reserved. Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloaded or stored in any storage
medium, for any purpose without the express prior written consent of Garmin. Garmin hereby grants permission to download a single copy of this manual onto a hard drive or
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contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited.

Information in this document is subject to change without notice. Garmin reserves the right to change or improve its products and to make changes in the content without
obligation to notify any person or organization of such changes or improvements. Visit the Garmin Web site (www.garmin.com) for current updates and supplemental
information concerning the use and operation of this and other Garmin products.

Garmin®, the Garmin logo, and GPSMAP® are trademarks of Garmin Ltd. or its subsidiaries, registered in the USA and other countries. GFS™, GWS™, GHP™, GXM™
Intelliducer™, are trademarks of Garmin Ltd. or its subsidiaries. These trademarks may not be used without the express permission of Garmin.

NMEA 2000® and the NMEA 2000 logo are registered trademarks of the National Maritime Electronics Association.

Garmin (Europe) Ltd.
Liberty House
Hounsdown Business Park,
Southampton, Hampshire, SO40 9RB UK
Tel. [phone] (outside the UK)
0808 2380000 (within the UK)
Fax [phone]

Garmin Corporation
No. 68, Jangshu 2nd Road,
Shijr, Taipei County, Taiwan
Tel. [phone]
Fax [phone]

March 2009 Part Number 190-00891-00 Rev. B Printed in Taiwan

Introduction

Introduction

A NMEA 2000 network consists of connected NMEA 2000 devices that communicate using basic plug-and-play functionality. This technical

reference provides basic NMEA 2000 component identication, basic NMEA 2000 network-building instructions, and a list of NMEA 2000­specic data used with Garmin NMEA 2000-certied displays and sensors.

The rst section, NMEA 2000 Fundamentals, provides descriptions of the NMEA 2000 connectors and cables sold by Garmin, and the

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fundamental concepts of installing a NMEA 2000 network on your boat.

The second section, General NMEA 2000 Data Type Requirements, provides a table to help you determine which NMEA 2000 sensors

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provide the particular data type you want.

The last two sections provide Parameter Group Number (PGN) information for Garmin chartplotters and marine instruments as well as

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conguration and PGN information for Garmin NMEA 2000 sensors. These sections contain PGN and conguration information for the

following products:

GPSMAP® 4/5000 Series chartplotters

◦

GMI™ 10

◦

™

10

GFS

◦

Intelliducers

◦

GWS™ 10

◦

GHP™ 10 (CCU and GHC™ 10)

◦

GXM™ 51

◦

VHF 200

◦

™

NOTE: PGN information is also included in the installation instructions provided with the Garmin NMEA 2000-certied device. Sensor conguration

information is also included in a Sensor Conguration Guide provided with each Garmin NMEA 2000-certied sensor.

At the end is a checklist. Use this checklist when installing a NMEA 2000 network to be sure you have correctly followed installation-

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critical procedures.

Contact Garmin

If you experience difculty installing a NMEA 2000 network, or have other questions about NMEA 2000-certied Garmin devices, contact
Garmin Product Support or a certied NMEA 2000 technician. In the USA, go to www.garmin.com/support, or contact Garmin USA by phone

at [phone] or [phone].

In the UK, contact Garmin (Europe) Ltd. by phone at 0808 2380000.

In Europe, go to www.garmin.com/support and click Contact Support for in-country support information, or contact Garmin (Europe) Ltd. by
phone at +44 (0) 870.8501241.

Technical Reference for Garmin NMEA 2000 Products iii

Table of Contents

Table of Contents

Introduction ....................................................................................................................................................................................... iii

Contact Garmin ......................................................................................................................................................................................................iii

NMEA 2000 Fundamentals ................................................................................................................................................................ 1

Garmin NMEA 2000 Device Overview ...................................................................................................................................................................1

NMEA 2000 Components ........................................................................................................................................................................................................2

Building a NMEA 2000 Network ............................................................................................................................................................................. 3

Linear Backbone Construction ................................................................................................................................................................................................4

Power Connection and Distribution .........................................................................................................................................................................................5

Examples ................................................................................................................................................................................................................................5

Proper Termination ..................................................................................................................................................................................................................7

Cable Length and Device Limits .............................................................................................................................................................................................8

Existing NMEA 2000 Installation Considerations ...................................................................................................................................................8

NMEA 2000 Glossary ............................................................................................................................................................................................. 8

General NMEA 2000 Data Type Requirements ................................................................................................................................ 9

NMEA 2000-Certied Display Device PGN Information ............................................................................................................... 13

GPSMAP 4000/5000 Series Chartplotters ............................................................................................................................................................................13

GMI 10 ..................................................................................................................................................................................................................................14

NMEA 2000-Certied Sensor PGN Information ............................................................................................................................ 15

GPS 17x (GPS Antenna) ..................................................................................................................................................................................... 15

GFS 10 (Garmin Fuel Sensor) ............................................................................................................................................................................. 15

Intelliducer (Intelligent Depth Transducer–Transom Mount and Thru-Hull) ......................................................................................................... 15

GWS 10 (Garmin Wind Sensor) ........................................................................................................................................................................... 16

GHP 10 (Marine Autopilot System) ...................................................................................................................................................................... 16

CCU ......................................................................................................................................................................................................................................16

GHC 10 .................................................................................................................................................................................................................................16

GXM 51 ................................................................................................................................................................................................................17

VHF 200 ...............................................................................................................................................................................................................17

NMEA 2000-Certied Sensor Conguration Information ............................................................................................................. 18

GPS 17x (GPS Antenna) ..................................................................................................................................................................................... 18

Enabling and Disabling WAAS (Wide Area Augmentation System)/EGNOS (Euro Geostationary Navigation Overlay Service) .........................................18

Setting the Speed Filter .........................................................................................................................................................................................................18

Refreshing GPS Satellite Acquisition ....................................................................................................................................................................................18

Restoring Factory Default Settings .......................................................................................................................................................................................18

GFS 10 (Garmin Fuel Sensor) ............................................................................................................................................................................. 19

Using Fuel-Flow Information With a Garmin Chartplotter or Marine Instrument ...................................................................................................................19

Changing the Fuel Economy Source ....................................................................................................................................................................................19

Using Fuel-Level Information With a Garmin Chartplotter or Marine Instrument ..................................................................................................................19

Conguring Engine and Tank Information .............................................................................................................................................................................20

Troubleshooting Fuel Gauge Type ........................................................................................................................................................................................20

Troubleshooting the Fuel-Flow Rate .....................................................................................................................................................................................20

Restoring Factory Default Settings .......................................................................................................................................................................................20

Intelliducer (Intelligent Depth Transducer–Transom Mount and Thru-Hull) ......................................................................................................... 21

Setting the Keel Offset ..........................................................................................................................................................................................................21

GWS 10 (Garmin Wind Sensor) ........................................................................................................................................................................... 22

Conguring the Wind Angle Offset (Orientation) ...................................................................................................................................................................22

Conguring the Wind Speed Filter ........................................................................................................................................................................................22

Conguring the Wind Angle Filter ..........................................................................................................................................................................................22

Conguring the GWS 10 if the Filter and Offset Selections Are Not Displayed ....................................................................................................................22

NMEA 2000 Checklist ..................................................................................................................................................................... 25

iv Technical Reference for Garmin NMEA 2000 Products

NMEA 2000 Fundamentals

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NMEA 2000 Fundamentals

A NMEA 2000 network is made of connected NMEA 2000 devices that communicate using basic plug-and-play functionality.

If your boat already contains a NMEA 2000 network and you would like to add Garmin NMEA 2000 components, see page 8.

For a glossary of commonly used NMEA 2000 terms, see page 8.

After you have installed your NMEA 2000 network, use the checklist on page 25 to verify the installation.

Garmin NMEA 2000 Device Overview

Garmin uses NMEA 2000 micro connectors on units, sensors, and T-connectors that are compatible with other NMEA 2000 micro connectors,
cables, and NMEA 2000-compatible devices. Garmin sensors may be packaged with a drop cable and a T-connector. Garmin displays may also
include additional NMEA 2000 components (such as a power cable). The NMEA 2000 components included with a Garmin sensor or display
are listed in the product documentation. A diagram on the product box shows which NMEA 2000 components are included.

Sample Box Diagram (GFS 10)

In the sample box diagram, a complete NMEA 2000 network is shown, and the parts included with the sensor are shaded. In this example, a
T-connector is included with a Garmin GFS 10 fuel sensor. A NMEA 2000 power cable, terminators, an additional drop/backbone cable, and
additional T-connectors are not included with a GFS 10 fuel sensor. The GFS 10 fuel sensor, as shown by the shaded components on the box
diagram, is intended to be connected to an existing NMEA 2000 network on your boat. If you do not have a NMEA 2000 network on your boat,
this guide will help you assemble one.

Technical Reference for Garmin NMEA 2000 Products 1

NMEA 2000 Fundamentals

NMEA 2000 Components

The main components of a NMEA 2000 network are T-connectors, terminators, backbone/drop cables, and a power cable. The following cables,
connectors, and terminators are sold by Garmin, and as of January 2009, they are NMEA 2000 approved. NMEA 2000-approved cables sold by
Garmin feature the NMEA 2000 logo on the tag with the part number.

T-connector Male Terminator Female Terminator In-line Terminator

010-11078-00 (Garmin part number) 010-11080-00 010-11081-00 010-11096-00

Power Cable

010-11079-00 (2 meters [6.5 feet]) (3 A fuse included)

Backbone/Drop Cable

305 millimeters (1 foot) 010-11076-03

2 meters (6.5 feet) 010-11076-00

6 meters (20 feet) 010-11076-01

10 meters (33 feet) (backbone only) 010-11076-02

30 meter spool (98.5 feet) (backbone only) 010-11171-01

Specialty Cable/Connectors

Right-angle drop-cable, 2 meters (6.5 feet) (pictured) 010-11089-00

Field-installable connector - Male* (not pictured) 010-11094-00

Field-installable connector - Female* (not pictured) 010-11095-00

NMEA 2000 network power switch (not pictured) K00-00368-00

NMEA 2000 in-line lightning arrestor** (not pictured) 010-11171-02

* The eld-installable connectors are used to create custom-length drop cables and custom-length backbone extension cables. The eld-installable connectors can be used to

shorten any Garmin NMEA 2000 drop/backbone cable.

** The gray in-line lightning arrestor is designed to help prevent damage due to nearby lightning strikes, but it is not able to protect against direct lightning strikes. Garmin is
not responsible for lightning-strike related damage.

NOTE: All male/female connections are interchangeable. Ensure that the T-connectors are used properly when constructing your NMEA 2000 network.

See page 4.

2 Technical Reference for Garmin NMEA 2000 Products

NMEA 2000 Fundamentals

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Building a NMEA 2000 Network

The main communication channel of a NMEA 2000 network is a backbone to which your NMEA 2000 devices connect. Each NMEA 2000
device connects to the backbone with a T-connector. The NMEA 2000 backbone must be connected to power, and terminators must be installed
at both ends for the network to function correctly.

When you design a NMEA 2000 network, start by creating a diagram of the network. When creating the diagram, be as detailed as possible:

Include all of the devices you intend to connect to your network

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Note the approximate location of the backbone and devices on your boat

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Measure the distances between devices and the backbone, as well as the overall length of the backbone

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Note the power consumption of each device (Load Equivalency Number)

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Intelligent transducer

Female

terminator

Fuel sensor

Marine instrument

Ignition or

in-line switch

Fuse

Battery - 12 Vdc

Power cable

Backbone extension cable

NMEA 2000 backbone

Sample NMEA 2000 Network

Chartplotter

Drop cable

T-connector

Male

terminator

NOTE: This diagram illustrates the NMEA 2000 data connections to each device or sensor. Some devices or sensors can be powered by the NMEA

2000 network; others may require a separate power connection. Consult the installation instructions for each device you connect to your NMEA 2000
network to be sure you supply power to the device appropriately.

When building a NMEA 2000 network, you must follow certain rules to make sure your NMEA 2000 network functions correctly. Be sure to
understand the following concepts:

Linear backbone construction (page 4)

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Power connection and distribution (page 5)

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Proper termination (page 7)

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Cable length and device limits (page 8)

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Technical Reference for Garmin NMEA 2000 Products 3

NMEA 2000 Fundamentals

CORRECT

INCORRECT

Linear Backbone Construction

Use the NMEA 2000 T-connectors to construct your NMEA 2000 backbone, and extend the backbone with appropriate lengths of backbone
cable if necessary. Use one T-connector per device. Use the sides of the T-connector to construct the backbone of the NMEA 2000 network, and
use the top of the T-connector to attach a NMEA 2000 device. By using only the sides of the T-connectors to construct the backbone, you create
a linear construction to your NMEA 2000 network. T-connectors can be separated by backbone cables or connected directly together.

Although the male and female connectors on the T-connectors and backbone cables will t on all sides of a T-connector, it is very important to

use only the top of the T-connector to attach NMEA 2000 devices, not to attach other T-connectors or backbone cables.

To NMEA 2000 devices

and power

Female

terminator

Backbone extension cable

Male

terminator

Correct Linear Backbone Construction

T-connector

installed incorrectly

Male

terminator

(also installed

incorrectly)

Incorrect Linear Backbone Construction

To NMEA 2000 devices

and power

Backbone extension cable

Male

terminator

4 Technical Reference for Garmin NMEA 2000 Products

NMEA 2000 Fundamentals

CORRECT

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Power Connection and Distribution

Your NMEA 2000 network must be connected to a 12 Vdc power supply. Do not connect your NMEA 2000 network to any other voltage
source, such as a 24 Vdc power supply. Use a NMEA 2000 power cable to connect your NMEA 2000 backbone to the auxiliary power switch
on your boat. If you do not have an auxiliary power switch, or if connecting to the auxiliary power switch causes electrical interference, connect
the NMEA 2000 power cable directly to the battery and install an in-line switch.

CAUTION: If you connect the NMEA 2000 network to your battery without an in-line switch, it may drain your battery.

Be sure to ground the NMEA 2000 power cable. Connect the bare shield-drain wire to the same location as the ground (black) wire.

The Garmin NMEA 2000 power cable connects to a T-connector like other drop cables. Be sure to connect the NMEA 2000 power cable to the
top of a T-connector; never connect the NMEA 2000 power cable to the side of a T-connector. You can connect power either at the end of your
NMEA 2000 network or in the middle. When planning where to place the power cable and the T-connector on your NMEA 2000 network, you
will need to evaluate how the NMEA 2000 devices connected to your network use power. The NMEA 2000 network will work properly when
there is no more than a 3 Vdc drop in the supply voltage between the power source and the NMEA 2000 device located farthest from the power
source on the NMEA 2000 network. To determine the voltage drop in your NMEA 2000 network, use this equation:

Voltage Drop = Cable resistance (ohms/m)* × Distance (from the battery to the farthest device, in meters) × Network Load** × 0.1

* Garmin cable resistance value = 0.053
** Network Load = the sum of Load Equivalent Numbers (LEN) between the battery and the end of the network. The LEN for each device should be visible on
the device, or provided in the documentation for the device.

If you calculate a voltage drop of 3.0 Vdc or less, then you can connect power to either the end or the middle of your NMEA 2000 network,

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and it will function correctly.

If you calculate a voltage drop of more than 3.0 Vdc, you must connect power to the middle of your NMEA 2000 network. The location will

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depend on the network load and distance from the battery. Try to balance the voltage drop equally on both sides of the power connection.

If a voltage drop of under 3.0 Vdc is not possible on your NMEA 2000 network, contact a professional installer.

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Examples

The following examples show a correctly designed, end-powered NMEA 2000 network; an incorrectly designed NMEA 2000 network; and a
redesign of the incorrectly designed NMEA 2000 network to correctly balance power on the network.

End-powered NMEA 2000 network, correctly designed:

Power cable
Length = 2 m

NMEA 2000­compliant device
LEN = 4

Drop cable
Length = 2 m

Backbone cable
Length = 10 m

NMEA 2000­compliant device
LEN = 5

Drop cable
Length = 6 m

Backbone cable
Length = 10 m

NMEA 2000­compliant device
LEN = 7

Drop cable

Length = 6 m

When the voltage-drop formula is applied to this example, we
see that the voltage drop is less than 3.0 Vdc. This NMEA 2000
network will function correctly when powered at the end.

Technical Reference for Garmin NMEA 2000 Products 5

Voltage Drop = 0.053 × (2 + 10 + 10 + 6) × (4 + 5 + 7) × 0.1 = 2.37 Vdc

Cable

Cable

resistance

resistance

Distance Network load

Distance Network load

NMEA 2000 Fundamentals

INCORRECT

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CORRECT

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End-powered NMEA 2000 network, incorrectly designed:

NMEA 2000­compliant device
LEN = 4

Drop cable

Power cable
Length = 2 m

Length = 2 m

Backbone cable
Length = 20 m

When the voltage drop formula is applied to this example, we see

NMEA 2000­compliant device
LEN = 5

Voltage Drop = 0.053 × (2 + 20 + 10 + 6) × (4 + 5 + 7) × 0.1 = 3.22 Vdc

that the voltage drop is greater than 3.0 Vdc, so this NMEA 2000
network will not function correctly when powered at the end.

Drop cable
Length = 6 m

Cable

Cable

resistance

resistance

Backbone cable
Length = 10 m

Distance Network load

Distance Network load

NMEA 2000­compliant device
LEN = 7

Drop cable

Length = 6 m

This NMEA 2000 network must be redesigned with the power connected to the center of the network in order to function correctly.

Middle-powered NMEA 2000 network, correctly designed:

NMEA 2000­compliant device
LEN = 4

NMEA 2000­compliant device
LEN = 5

NMEA 2000­compliant device
LEN = 7

Drop cable
Length = 2 m

Backbone cable
Length = 20 m

Power cable
Length = 2 m

Drop cable
Length = 6 m

Backbone cable
Length = 10 m

Drop cable

Length = 6 m

When the NMEA 2000 network is redesigned with the power source in the center, you calculate the voltage drop in both directions. If the
T-connector to which you connect the power source is connected directly to another T-connector (as shown in this example), use the LEN from
that device as part of the calculation for both directions.

When the voltage drop formula is applied to both the left and right
sides of the power source in this example, we see that the voltage drop
is less than 3.0 Vdc on each side, so the NMEA 2000 network will
function correctly.

NOTE: The equation and examples provide conservative estimates for calculating voltage drop.

Voltage Drop Left = 0.053 × (2 + 20 + 2) × (4 + 5) × 0.1 = 1.145 Vdc

Cable

Cable

resistance

resistance

Distance

Distance

Network load

Network load

Voltage Drop Right = 0.053 × (2 + 10 + 6) × (5 + 7) × 0.1 = 1.145 Vdc

6 Technical Reference for Garmin NMEA 2000 Products

NMEA 2000 Fundamentals

Proper Termination

You must install terminators at the ends of your NMEA 2000 backbone for it to function correctly. You have two options when installing
terminators on your NMEA 2000 network.

1. Typical Terminators

If your NMEA 2000 network is built with correct linear backbone construction, use one female terminator and one male terminator. Install
the terminators at opposite ends of your NMEA 2000 network.

To NMEA 2000 devices

and power

Female

terminator

Backbone extension cable

Male

terminator

Using Standard Terminators

2. In-line Terminators

If one or both of the NMEA 2000 devices at opposite ends of your NMEA 2000 network are separated from the rest of the NMEA 2000
network by a length of backbone cable, and the typical T-connector/drop cable/terminator combination is not feasible or is too bulky for the

area, use an in-line terminator instead of the nal T-connector on the backbone. Connect the nal device to the in-line terminator with the
appropriate length of drop cable, or connect the nal device directly to the in-line terminator, without a drop cable.

Standard Termination

To a NMEA

2000 device

Female

terminator

To power

Backbone

extension

cable

Using an Inline Terminator

Inline Termination

To the nal NMEA 2000 device in the

backbone on this end. Connect the in-line

terminator directly to a NMEA 2000 device,

or use a drop cable up to 6 m (20 ft.) long.
Do not connect additional T-connectors or

terminators.

Inline

terminator

CAUTION: Do not use more than two terminators in a NMEA 2000 network.

NOTE: The in-line terminator connects to the NMEA 2000 backbone with a male connector, and to the nal NMEA 2000 device with a female

connector. Because of this, you can only use one in-line terminator on a NMEA 2000 network.

Technical Reference for Garmin NMEA 2000 Products 7

NMEA 2000 Fundamentals

Cable Length and Device Limits

When building your NMEA 2000 network, keep in mind these limitations:

The distance between any two points on the NEMA 2000 network must not exceed 100 m (328 ft). To estimate this distance, measure

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between the terminators on your backbone and add the length of the drop cable for the devices connected to the T-connnectors at the ends of
the network.

The total length of all drop cables cannot exceed 78 m (256 ft).

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The maximum length of a single drop cable to a NMEA 2000 device is 6 m (20 ft).

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No more than 50 NMEA 2000 devices can be connected to your NMEA 2000 network.

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Existing NMEA 2000 Installation Considerations

If your boat has an existing NMEA 2000 installation, and you would like to add Garmin NMEA 2000 equipment, there are a few things to
consider:

Cable Type

2000 mini connectors and cables in the backbone. Mini connectors are larger than micro connectors, and you will need to use a converter or
adapter to connect with Garmin NMEA 2000 devices.

Power: Is the existing NMEA 2000 network connected to power? A NMEA 2000 network must be connected to power to function correctly
(page 5). Do not connect the NMEA 2000 network to power in more than one location.

Termination

function correctly. Do not add more terminators to a NMEA 2000 network if it is already properly terminated.

If you are unsure of any of these considerations, contact your boat manufacturer or a certied NMEA 2000 technician for assistance.

: Garmin uses NMEA 2000 micro connectors for all cables and connectors. Your existing NMEA 2000 network may use NMEA

: Are terminators installed on the ends of the existing NMEA 2000 backbone? A NMEA 2000 network must be terminated to

NMEA 2000 Glossary

T-connector—Three-way connector with one male and two female micro connectors. A T-connector is used to connect a NMEA 2000 device to
the NMEA 2000 backbone.

Terminator

entire length of the backbone.

Inline Terminator

of the NMEA 2000 backbone. Simplies installation by not requiring a T-connector, terminator, and drop cable for the device at the end of the

backbone.

Drop Cable—Cable connecting a NMEA 2000 device to the NMEA 2000 backbone. Drop cables are limited to 6 m (20 ft.) maximum length.

Backbone Cable—In conjunction with T-connectors, the backbone cables create the main communication path of the NMEA 2000 network.

A backbone cable extends the NMEA 2000 backbone to connect NMEA 2000 devices located in different places on the boat. The maximum
backbone cable length is 100 m (328 ft.).

—120 ohm resistor located at each end of the NMEA 2000 backbone. Proper termination helps ensure signal integrity across the

—Special terminator with male and female connectors on either end. Allows direct connection to the a device at the end

Device—Electronic hardware that connects to the NMEA 2000 network. A device may only receive data transmitted by other devices on the
network, or may both transmit and receive data on the network.

Network Power—12 Vdc power supplied to the NMEA 2000 network. Power should be connected through a switch (instead of directly
connected to the battery) because some devices are always on when NMEA 2000 power is present. NMEA 2000 devices must operate from 9 to
16 Vdc, with a nominal voltage of 12 Vdc.

LEN (Load Equivalency Number)

1 LEN = 50 mA. Each device should have an LEN specied on the product or in the product documentation.

8 Technical Reference for Garmin NMEA 2000 Products

—This number indicates the amount of current a device draws from the NMEA 2000 network.

General NMEA 2000 Data Type Requirements

General NMEA 2000 Data Type Requirements

Each NMEA 2000-certied sensor provides unique information to the NMEA 2000-certied display devices (such as a GPSMAP 4000/5000

series chartplotter or a GMI 10) on the NMEA 2000 network. The data you can view on your display device depends on the sensors you have

installed and congured. Refer to the following table for a list of data types that you can view on a display device, specic NMEA 2000 PGN

information required to view or calculate that data type, and the NMEA 2000 sensor that typically provides required PGN information. In some

cases, more than one sensor is necessary or a specic combination of sensors may provide more precise information. For more about PGN

information, see page 13.

Category Data Type PGN Data Required Typical Sender

Engine Information Battery Voltage 127489 - Eng Dynamic NMEA 2000-compatible engine

Fuel Flow Rate 127489 - Eng Dynamic Fuel Flow Sensor

Hours 127489 - Eng Dynamic NMEA 2000-compatible engine

Oil Pressure 127489 - Eng Dynamic NMEA 2000-compatible engine

Engine RPM 127488 - Engine Rapid NMEA 2000-compatible engine

Temperature 127489 - Eng Dynamic NMEA 2000-compatible engine

Coolant Pressure 127489 - Eng Dynamic NMEA 2000-compatible engine

Fuel Pressure 127489 - Eng Dynamic NMEA 2000-compatible engine

Oil Temperature 127489 - Eng Dynamic NMEA 2000-compatible engine

Boost Pressure 127488 - Engine Rapid NMEA 2000-compatible engine

Trim 127488 - Engine Rapid NMEA 2000-compatible engine

Rudder Angle 127245 - Rudder Rudder Angle Sensor

Bow Tabs 130576 - Small Craft Status Trim Tab Sensor

Trim Tabs 130576 - Small Craft Status Trim Tab Sensor

Fuel Information Total Fuel Flow Rate 127489 - Eng Dynamic Fuel Flow Sensor

Total Fuel Onboard 127489 - Eng Dynamic Fuel Flow Sensor

Fuel Economy 127489 - Eng Dynamic (GPS Speed or Water Speed)

Note: The Fuel Economy data type is congurable,

based on the fuel speed source

Cruising Range 127489 - Eng Dynamic (GPS Speed or Water Speed) Fuel Flow Sensor and Speed Sensor

Fuel Level 127505 - Fluid Level Fuel Level Sensor

Tank 1 127505 - Fluid Level Fuel Level Sensor

Tank 2 127505 - Fluid Level Fuel Level Sensor

Navigation
Information

Distance Made Good 129026 - COG/SOG, 129029 - GNSS Position,

Waypoint Name 129284 - Nav Data or 129285 - Route Garmin Chartplotter

Bearing to Waypoint 129284 - Nav Data Garmin Chartplotter and GPS Antenna

Distance to Waypoint 129284 - Nav Data Garmin Chartplotter and GPS Antenna

Off Course 129283 - XTE Garmin Chartplotter and GPS Antenna

Desired COG 129284 - Nav Data Garmin Chartplotter and GPS Antenna

Heading 127250 - Vessel Heading Heading Sensor

Course Over Ground 129026 - COG/SOG and 129029 - GNSS Position GPS Antenna

Course Made Good 129026 - COG/SOG, 129029 - GNSS Position,

129284 - Nav Data, 129285 - Route, and
129283 - XTE

129284 - Nav Data, and 129285 - Route

Fuel Flow Sensor and Speed Sensor

Garmin Chartplotter and GPS Antenna

Garmin Chartplotter and GPS Antenna

(Continued)

Technical Reference for Garmin NMEA 2000 Products 9

General NMEA 2000 Data Type Requirements

Category Data Type PGN Data Required Typical Sender

Navigation
Information
(continued)

Position 129026 - COG/SOG and 129029 - GNSS Position GPS Antenna

Turn 129026 - COG/SOG, 129029 - GNSS Position, and

Trip Odometer 129026 - COG/SOG and 129029 - GNSS Position GPS Antenna

Trip Odometer 129026 - COG/SOG and 129029 - GNSS Position GPS Antenna

Average GPS Speed 129026 - COG/SOG and 129029 - GNSS Position GPS Antenna

Maximum GPS Speed 129026 - COG/SOG and 129029 - GNSS Position GPS Antenna

Water Odometer 128259 - Water Speed Water Speed Sensor

Water Trip Odometer 128259 - Water Speed Water Speed Sensor

Average Water Speed 128259 - Water Speed Water Speed Sensor

Maximum Water Speed 128259 - Water Speed Water Speed Sensor

Weather Barometer 130314 - Actual Pressure, 130310 - Envir Param Old,

Air Temperature 130312 - Temp, 130310 - Envir Param Old,

Humidity 130313 - Humidity or 130311 - Envir Param Humidity Sensor

Wind Speed 130306 - Wind Data, 129026 - COG/SOG, 129029

Wind Direction 130306 - Wind Data, 129026 - COG/SOG, 129029

GPS Speed 129026 - COG/SOG and 129029 - GNSS Position GPS Antenna

Garmin Chartplotter and GPS Antenna

129284 - Nav Data

Barometric Pressure Sensor

or 130311 - Envir Param

Air Temperature Sensor

or 130311 - Envir Param

Either:

- GNSS Position, 127250 - Vessel Heading, and
128259 - Water Speed

(If a Heading Sensor and Water Speed Sensor are
not present, a less accurate reading can be calculated
using only the Wind Sensor and GPS antenna
[130306 - Wind Data, 129026 - COG/SOG and
129029 - GNSS Position]

(If a GPS antenna is not present, a less accurate
reading can be calculated using only the Wind Sensor,
Water Speed Sensor, and Heading Sensor [130306

- Wind Data, 127250 - Vessel Heading, and 128259

- Water Speed])

- GNSS Position, 127250 - Vessel Heading, and
128259 - Water Speed

(If a Heading Sensor and Water Speed Sensor are
not present, a less accurate reading can be calculated
using only the Wind Sensor and GPS antenna
[130306 - Wind Data, 129026 - COG/SOG and
129029 - GNSS Position]

(If a GPS antenna is not present, a less accurate
reading can be calculated using only the Wind Sensor,
Water Speed Sensor, and Heading Sensor [130306

- Wind Data, 127250 - Vessel Heading, and 128259

- Water Speed])

)

)

Wind Sensor, a Water Speed

•
Sensor, a Heading Sensor, and a
GPS Antenna

Wind Sensor and a GPS Antenna

•
Wind Sensor and a Water Speed

•
Sensor, and a Heading Sensor

Either:

Wind Sensor, a Water Speed

•
Sensor, a Heading Sensor, and a
GPS Antenna

Wind Sensor and a GPS Antenna

•
Wind Sensor and a Water Speed

•
Sensor, and a Heading Sensor

(Continued)

10 Technical Reference for Garmin NMEA 2000 Products

General NMEA 2000 Data Type Requirements

Category Data Type PGN Data Required Typical Sender

Cardinal Wind Direction 130306 - Wind Data, 129026 - COG/SOG, 129029

- GNSS Position, 127250 - Vessel Heading, and
128259 - Water Speed

(If a Heading Sensor and Water Speed Sensor are
not present, a less accurate reading can be calculated
using only the Wind Sensor and GPS antenna
[130306 - Wind Data, 129026 - COG/SOG and
129029 - GNSS Position]

(If a GPS antenna is not present, a less accurate
reading can be calculated using only the Wind Sensor,
Water Speed Sensor, and Heading Sensor [130306

- Wind Data, 127250 - Vessel Heading, and 128259

- Water Speed])

Beaufort Scale 130306 - Wind Data, 129026 - COG/SOG, 129029

- GNSS Position, 127250 - Vessel Heading, and
128259 - Water Speed

(If a Heading Sensor and Water Speed Sensor are
not present, a less accurate reading can be calculated
using only the Wind Sensor and GPS antenna
[130306 - Wind Data, 129026 - COG/SOG and
129029 - GNSS Position]

(If a GPS antenna is not present, a less accurate
reading can be calculated using only the Wind Sensor,
Water Speed Sensor, and Heading Sensor [130306

- Wind Data, 127250 - Vessel Heading, and 128259

- Water Speed])

Sunrise/Sunset 129026 - COG/SOG and 129029 - GNSS Position GPS Antenna

Sailing Apparent Wind Speed 130306 - Wind Data Wind Sensor

Apparent Wind Angle 130306 - Wind Data Wind Sensor

True Wind Speed 130306 - Wind Data and 128259 - Water Speed (If a

Water Speed Sensor is not present, a less accurate
reading can be calculated using a GPS antenna
instead [129026 - COG/SOG and 129029 - GNSS
Position])

True Wind Angle 130306 - Wind Data and 128259 - Water Speed (If a

Water Speed Sensor is not present, a less accurate
reading can be calculated using a GPS antenna
instead [129026 - COG/SOG and 129029 - GNSS
Position])

Wind VMG (Velocity Made Good) 130306 - Wind Data and 128259 - Water Speed (If a

Water Speed Sensor is not present, a less accurate
reading can be calculated using a GPS antenna
instead [129026 - COG/SOG and 129029 - GNSS
Position])

Waypoint VMG 129284 - Nav Data Garmin Chartplotter and GPS Antenna

Maximum Apparent Wind Speed 130306 - Wind Data Wind Sensor

Maximum True Wind Speed 130306 - Wind Data and 128259 - Water Speed (If a

Water Speed Sensor is not present, a less accurate
reading can be calculated using a GPS antenna
instead [129026 - COG/SOG and 129029 - GNSS
Position])

Opposite Tack Heading 130306 - Wind Data, 127250 - Vessel Heading, and

128259 - Water Speed (If a Water Speed Sensor is

not present, a less accurate reading can be calculated
using a GPS antenna instead [129026 - COG/SOG
and 129029 - GNSS Position])

(Continued)

)

)

Either:

Wind Sensor, a Water Speed

•
Sensor, a Heading Sensor, and a
GPS Antenna

Wind Sensor and a GPS Antenna

•
Wind Sensor and a Water Speed

•
Sensor, and a Heading Sensor

Either:

Wind Sensor, a Water Speed

•
Sensor, a Heading Sensor, and a
GPS Antenna

Wind Sensor and a GPS Antenna

•
Wind Sensor and a Water Speed

•
Sensor, and a Heading Sensor

Either a Wind Sensor and Speed Sensor

or a Wind Sensor and a GPS Antenna

Either a Wind Sensor and Speed Sensor

or a Wind Sensor and a GPS Antenna

Either a Wind Sensor and Speed Sensor

or a Wind Sensor and a GPS Antenna

Either a Wind Sensor, a Heading Sensor,
and Speed Sensor or a Wind Sensor, a

Heading Sensor, and a GPS Antenna

Either a Wind Sensor and both Water
Speed and Heading Sensors, or a Wind

Sensor and a GPS Antenna

Technical Reference for Garmin NMEA 2000 Products 11

General NMEA 2000 Data Type Requirements

Category Data Type PGN Data Required Typical Sender

Water Depth 128267 - Water Depth Depth Transducer

Temperature 130312 - Temp, 130310 - Envir Param Old, or

130311 - Envir Param

Speed 128259 - Water Speed Water Speed Sensor

Set 129026 - COG/SOG, 129029 - GNSS Position,

128259 - Water Speed, and 127250 - Vessel Heading

Drift 129026 - COG/SOG, 129029 - GNSS Position,

128259 - Water Speed, and 127250 - Vessel Heading

System Time Of Day 129026 - COG/SOG and 129029 - GNSS Position GPS Antenna

Date 129026 - COG/SOG and 129029 - GNSS Position GPS Antenna

Timer None None

Unit Voltage None None

Water Temperature Sensor

GPS Antenna, Water Speed Sensor, and
Heading Sensor

GPS Antenna, Water Speed Sensor, and
Heading Sensor

12 Technical Reference for Garmin NMEA 2000 Products

NMEA 2000-Compatible Display Device PGN Information

NMEA 2000-Certied Display Device PGN Information

All data transmitted on a NMEA 2000 network are organized into groups. These groups are identied by a Parameter Group Number (PGN)

that describes the type of data contained in the group. All Garmin NMEA 2000 devices use the proprietary PGN numbers 126720 and 61184.
All the other PGN numbers follow the NMEA 2000 standard.

The following tables list the non-proprietary PGN information for all Garmin NMEA 2000-certied display devices.

For NMEA 2000 conguration information on every available Garmin NMEA 2000-certied display devices, see the owner’s manual for your

display device.

GPSMAP 4000/5000 Series Chartplotters

Receive Transmit

059392 ISO Acknowledgment 059392 ISO Acknowledgment

059904 ISO Request 059904 ISO Request

060928 ISO Address Claim 060928 ISO Address Claim

126208 NMEA - Command/Request/Acknowledge Group Function 126208 NMEA - Command/Request/Acknowledge Group Function

126464 Transmit/Receive PGN List Group Function 126464 Transmit/Receive PGN List Group Function

126992 System Time 126996 Product Information

126996 Product Information 127250 Vessel Heading

127250 Vessel Heading 127258 Magnetic Variation

127488 Engine Parameters - Rapid Update 128259 Speed - Water Referenced

127489 Engine Parameters - Dynamic 128267 Water Depth

127505 Fluid Level 129025 Position - Rapid Update

128259 Speed - Water Referenced 129026 COG & SOG - Rapid Update

128267 Water Depth 129029 GNSS Position Data

129025 Position - Rapid Update 129540 GNSS Sats in View

129026 COG & SOG - Rapid Update 129283 Cross Track Error

129029 GNSS Position Data 129284 Navigation Data

129539 GNSS DOPs 12985 Navigation - Route/Waypoint Information

129540 GNSS Sats in View 130306 Wind Data

130306 Wind Data 130312 Temperature

130310 Environmental Parameters

130311 Environmental Parameters

130312 Temperature

130313 Humidity

130314 Actual Pressure

Technical Reference for Garmin NMEA 2000 Products 13

NMEA 2000-Compatible Display Device PGN Information

GMI 10

Receive Transmit

059392 ISO Acknowledgment 059392 ISO Acknowledgment

059904 ISO Request 059904 ISO Request

060928 ISO Address Claim 060928 ISO Address Claim

126208 NMEA - Command/Request/Acknowledge Group Function 126208 NMEA - Command/Request/Acknowledge Group Function

126464 Transmit/Receive PGN List Group Function 126464 Transmit/Receive PGN List Group Function

126992 System Time 126996 Product Information

126996 Product Information

127250 Vessel Heading

127488 Engine Parameters - Rapid Update

127488 Boost Pressure

127489 Coolant Pressure

127489 Fuel Pressure

127489 Oil Temperature

127489 Engine Parameters - Dynamic

127505 Fluid Level

128259 Speed - Water Referenced

128267 Water Depth

129025 Position - Rapid Update

129026 COG & SOG - Rapid Update

129029 GNSS Position Data

129044 Datum

129283 Cross Track Error

129284 Navigation Data

129285 Navigation - Route/WP information

129539 GNSS DOPs

129540 GNSS Sats in View

130306 Wind Data

130310 Environmental Parameters

130311 Environmental Parameters

130312 Temperature

130313 Humidity

130314 Actual Pressure

14 Technical Reference for Garmin NMEA 2000 Products

NMEA 2000-Certied Sensor PGN Information

NMEA 2000-Certied Sensor PGN Information

The following tables list the non-proprietary PGN information for every available Garmin NMEA 2000-certied sensor.

GPS 17x (GPS Antenna)

Transmit Receive

059392 ISO Acknowledgment 059392 ISO Acknowledgment

060928 ISO Address Claim 059904 ISO Request

126208 NMEA - Command/Request/Acknowledge Group Function 060928 ISO Address Claim

126464 Transmit/Receive PGN List Group Function 126208 NMEA - Command/Request/Acknowledge Group Function

126992 System Time and Date

126996 Product Information

129025 Position - Rapid Update

129026 COG & SOG - Rapid Update

129029 GNSS Position Data

129539 GNSS DOPs

129540 GNSS Sats in View

GFS 10 (Garmin Fuel Sensor)

Transmit Receive

059392 ISO Acknowledgement 059392 ISO Acknowledgement

060928 ISO Address Claim 059904 ISO Request

126208 NMEA–Command/Request/Acknowledge Group Function 060928 ISO Address Claim

126464 Transmit/Receive PGN List Group Function 126208 NMEA–Command/Request/Acknowledge Group Function

126996 Product Information 127489 Engine Parameters - Dynamic

127489 Engine Parameters–Dynamic 127497 Trip Parameters, Engine

127497 Trip Parameters, Engine 127505 Fluid Level (when calibrated using a Garmin chartplotter or

marine instrument)

127505 Fluid Level (when calibrated using a Garmin chartplotter or

marine instrument)

Intelliducer (Intelligent Depth Transducer–Transom Mount and Thru-Hull)

Transmit Receive

059392 ISO Acknowledgement 059392 ISO Acknowledgement

060928 ISO Address Claim 059904 ISO Request

126208 NMEA–Command/Request/Acknowledge Group Function 060928 ISO Address Claim

126464 Transmit/Receive PGN List Group Function 126208 NMEA–Command/Request/Acknowledge Group Function

126996 Product Information

128267 Water Depth

130312 Temperature

Technical Reference for Garmin NMEA 2000 Products 15

NMEA 2000-Certied Sensor PGN Information

GWS 10 (Garmin Wind Sensor)

Transmit Receive

059392 ISO Acknowledgment 059392 ISO Acknowledgment

060928 ISO Address Claim 059904 ISO Request

126208 NMEA - Command/Request/Acknowledge Group Function 060928 ISO Address Claim

126464 Transmit/Receive PGN List Group Function 126208 NMEA - Command/Request/Acknowledge Group Function

126996 Product Information

130306 Wind Data

130312 Temperature

130314 Actual Pressure

GHP 10 (Marine Autopilot System)

The GHP 10 autopilot system contains two components that utilize NMEA 2000, the CCU and the GHC 10.

CCU

Transmit Recieve

059392 ISO Acknowledgment 059392 ISO Acknowledgment

059904 ISO Request 059904 ISO Request

060928 ISO Address Claim 060928 ISO Address Claim

126208 NMEA - Command/Request/Acknowledge Group Function 126208 NMEA - Command/Request/Acknowledge Group Function

126464 Transmit/Receive PGN List Group Function 126464 Transmit/Receive PGN List Group Function

126996 Product Information 126996 Product Information

127250 Vessel Heading 127258 Magnetic Variation

127488 Engine Parameters - Rapid Update

129025 Position - Rapid Update

129026 COG & SOG - Rapid Update

129283 Cross Track Error

129284 Navigation Data

GHC 10

Transmit Recieve

059392 ISO Acknowledgment 059392 ISO Acknowledgment

059904 ISO Request 059904 ISO Request

060928 ISO Address Claim 060928 ISO Address Claim

126208 NMEA - Command/Request/Acknowledge Group Function 126208 NMEA - Command/Request/Acknowledge Group Function

126464 Transmit/Receive PGN List Group Function 126464 Transmit/Receive PGN List Group Function

126996 Product Information 126996 Product Information

129025 Position - Rapid Update 127250 Vessel Heading

129026 COG & SOG - Rapid Update 127488 Engine Parameters - Rapid Update

129029 GNSS Position Data 129025 Position - Rapid Update

129283 Cross Track Error 129029 GNSS Position Data

129284 Navigation Data 129284 Navigation Data

129285 Navigation - Route/WP information 129285 Navigation - Route/WP information

129540 GNSS Sats in View

16 Technical Reference for Garmin NMEA 2000 Products

NMEA 2000-Certied Sensor PGN Information

GXM 51

Transmit Receive

059392 ISO Acknowledgment 059392 ISO Acknowledgment

060928 ISO Address Claim 059904 ISO Request

126208 NMEA - Command/Request/Acknowledge Group

Function

126464 Transmit/Receive PGN List Group Function 126208 NMEA - Command/Request/Acknowledge Group Function

126996 Product Information

060928 ISO Address Claim

VHF 200

Transmit Receive

059392 ISO Acknowledgment 059392 ISO Acknowledgment

060928 ISO Address Claim 059904 ISO Request

126208 NMEA Request/Command/Acknowledge Group

Function

126464 PGN List 126208 NMEA - Command/Request/Acknowledge Group Function

126996 Product Information 129026 COG (course over ground) and SOG (speed over ground) - Rapid

129799 Radio Frequency/Mode/Power

129808 DSC Call Information 129029 GNSS (Global Navigation Satellite System) Position Data

060928 ISO Address Claim

Update

Technical Reference for Garmin NMEA 2000 Products 17

NMEA 2000-Certied Sensor Conguration Information

NMEA 2000-Certied Sensor Conguration Information

Garmin NMEA 2000-certied sensors each have a Sensor Conguration Guide included in the package. For convenience, this section contains
the conguration information for every available Garmin NMEA 2000 sensors. All NMEA 2000 device conguration options are set from the
NMEA 2000 conguration menu on your NMEA 2000 display device.

Important: To access the NMEA 2000 conguration menu on your display device, consult the documentation provided with your display

device.

GPS 17x (GPS Antenna)

Enabling and Disabling WAAS (Wide Area Augmentation System)/EGNOS (Euro Geostationary
Navigation Overlay Service)

When enabled, WAAS/EGNOS provides more accurate position information. For more information on WAAS/EGNOS, visit www.garmin.com.

1. While viewing the NMEA 2000 conguration menu, select the GPS 17x device.

2. Select Cong > WAAS/EGNOS.

3. On a Garmin chartplotter, select On or Off.

Setting the Speed Filter

The speed lter setting on the GPS 17x can help reduce unnecessary drift alarm triggers as well as potentially sporadic position information.
The speed lter averages the data provided by the GPS 17x to provide smoother position data updates. The speed lter is most helpful when

stationary or in low-speed situations.

1 While viewing the NMEA 2000 conguration menu, select the GPS 17x device.

2. Select Cong > Speed Filter.

3. Choose from the following options:

Off—position information from the GPS 17x is provided to the NMEA 2000 network as it is gathered.

•

On—position information from the GPS 17x is gathered and averaged before it is provided to the NMEA 2000 network. Select the interval

•

at which the position information is gathered.

Auto—the speed lter toggles on in low-speed situations and toggles off in high-speed situations.

•

Refreshing GPS Satellite Acquisition

In some situations, if you have moved the boat many miles without using the GPS 17x, for example, you can force the GPS 17x to re-initialize

and nd your current position.

1. While viewing the NMEA 2000 conguration menu, select the GPS 17x device.

2. Select Cong > Auto Locate.

3. Wait for the GPS 17x to acquire satellites.

Restoring Factory Default Settings

You can restore factory default settings to the GPS 17x. You will lose all custom conguration settings when you restore factory default

settings.

To restore factory default settings:

1. While viewing the NMEA 2000 conguration menu, select the GPS 17x device.

2. Select Cong > Factory Defaults.

18 Technical Reference for Garmin NMEA 2000 Products

NMEA 2000-Certied Sensor Conguration Information

GFS 10 (Garmin Fuel Sensor)

CAUTION: The GFS 10 is a sensor that helps you better determine the amount of fuel used on your boat; you should not rely solely on the GFS 10 for

fuel-level information. Carefully compare information displayed on the unit to all available fuel-level instruments and sources.

Using Fuel-Flow Information With a Garmin Chartplotter or Marine Instrument

CAUTION: The Garmin chartplotter or marine instrument must be powered on to calculate remaining fuel based on the fuel-ow rate.

Important: When using the GFS 10 to calculate remaining fuel based on the fuel-ow rate, you must specify the amount of fuel each time you

add fuel to the tank.

To specify the amount of fuel added:

1. While viewing the fuel page or fuel instrument screen on your NMEA 2000 device, select Menu.

2. Choose from the following options:

Fill Up Tank—set fuel level to the maximum capacity.

•

Add Fuel to Boat—specify the amount of fuel added.

•

Set Total Fuel Onboard—specify the amount of fuel currently available in the fuel tank or tanks.

•

Changing the Fuel Economy Source

The Garmin chartplotter or marine instrument requires a speed sensor in addition to the GFS 10 to calculate fuel economy.

To change the fuel economy source:

1. While viewing the fuel page or fuel instrument screen on your NMEA 2000 device, select Menu > Fuel Economy Source.

2. Select either GPS Speed or Water Speed to specify which speed sensor is used to calculate fuel economy.

Using Fuel-Level Information With a Garmin Chartplotter or Marine Instrument

To receive fuel-level information, connect the wiring harness on the GFS 10 to the fuel gauge or fuel-level sensor of your boat according to the
GFS 10 Installation Instructions.

To calibrate fuel-level information from the GFS 10:

1. While in still water, on the NMEA 2000 device conguration menu, select the GFS 10 device that is connected to the fuel tank you want to
congure.

TIP: The serial number of each GFS 10 is shown on the NMEA 2000 device conguration screen to help differentiate among multiple GFS 10 devices.

2. Select Cong > Level Calibration > Add Calibration Point and enter a calibration point that corresponds to the current fuel level in that
fuel tank.

Entering more calibration points will provide a more-accurate reading. For example, entering ve calibration points (empty tank, 1/4 tank, 1/2

tank, 3/4 tank, and full tank) will provide a more-accurate reading than entering two calibration points (empty tank and full tank).

TIP: For a quick calibration, start with an empty tank, and enter calibration points as you ll up the tank.

To reset the fuel-level calibration:

1. While viewing the NMEA 2000 device conguration menu, select the GFS 10 device that is connected to the fuel tank you want to congure.

2. Select Cong > Level Calibration > Reset Calibration.

Technical Reference for Garmin NMEA 2000 Products 19

NMEA 2000-Certied Sensor Conguration Information

Conguring Engine and Tank Information

If you have a multi-engine or a multi-tank setup on your boat, specify which engine or tank is associated with each GFS 10.

TIP: The serial number of each GFS 10 is shown on the NMEA 2000 device conguration menu to help differentiate among multiple GFS 10 devices.

To congure tank and engine information for the GFS 10:

1. While viewing the NMEA 2000 device conguration menu, select the GFS 10 device you want to congure, and select Cong.

2. Select from the following options:

Engine Number—for a multi-engine installation, assign the selected GFS 10 to a specic engine.

•

Tank Number—for a multi-tank installation, assign the selected GFS 10 to a specic tank.

•

Tank Capacity—dene the fuel capacity of the fuel tank that the selected GFS 10 is connected to.

•

Troubleshooting Fuel Gauge Type

When wired to a fuel gauge, the gauge type defaults to Auto Detect. If the fuel-level reading on your Garmin chartplotter or marine instrument
changes with the engine RPM, the GFS 10 could be detecting the wrong type of gauge.

NOTE: The fuel level changes with the motion of the boat. Perform this test when the boat is not moving.

To test the gauge-type setting:

1. When the boat is not moving, put the engine in neutral.

2. Use the throttle to increase the engine RPM. If the fuel-level reading changes with the engine RPM, change the gauge type.

To change the gauge-type setting:

1. While viewing the NMEA 2000 device conguration menu, select the GFS 10 device.

2. Select Cong > Gauge Type.

3. Choose 1 Coil or 2 Coil and repeat the gauge-type setting test.

Troubleshooting the Fuel-Flow Rate

If the fuel-ow information received from the GFS 10 appears inaccurate, you can manually adjust the fuel-ow reading.

To adjust the fuel-ow rate:

1. While viewing the NMEA 2000 device conguration menu, select the GFS 10 device.

2. Select Cong > Flow Adjustment.

3. Enter a positive or negative adjustment.

For example, when you set the Flow Adjustment to +10% , a ow reading of 20 gal./hr. (75 L/h) would change to a reading of 22 gal./hr.
(82.5 L/h), because 20 gal. × 110% = 22 gal. (75 L × 110% = 82.5 L).

Restoring Factory Default Settings

You can restore factory default settings to the GFS 10. You will lose all custom conguration and calibration settings when you restore factory

default settings.

To restore factory default settings:

1. While viewing the NMEA 2000 conguration menu, select the GFS 10 device.

2. Select Cong > Factory Defaults.

20 Technical Reference for Garmin NMEA 2000 Products

NMEA 2000-Certied Sensor Conguration Information

Intelliducer (Intelligent Depth Transducer–Transom Mount and Thru-Hull)

Setting the Keel Offset

Adjust the Keel Offset to display a depth reading from the water line or from the lowest point of the boat (keel) rather than the actual location
of the Intelliducer.

To adjust the keel offset:

1. While viewing the NMEA 2000 device conguration menu, select a specic Intelliducer and select Cong > Keel Offset.

2. Enter the measured distance from the Intelliducer location to the water line or to the keel of the boat.

If you are measuring down to the keel (Intelliducer installed at the water line), enter a (+) positive number.

•

If you are measuring up to the water line (Intelliducer installed on the keel), enter a (-) negative number.

•

Intelliducer at the water line

Enter a (+) positive number

to show depth at the

bottom of the keel.

Intelliducer at the bottom

of the keel

Enter a (-) negative

number to show depth at

the surface.

Keel Offset

Technical Reference for Garmin NMEA 2000 Products 21

NMEA 2000-Certied Sensor Conguration Information

GWS 10 (Garmin Wind Sensor)

Conguring the Wind Angle Offset (Orientation)

When mounting the sensor, you must adjust the angle offset if you did not orient the GWS 10 as described in the GWS 10 Installation
Instructions.

To congure the wind angle offset (orientation):

1. While viewing the NMEA 2000 device information, select Cong > Wind Angle Offset.

2. Select the angle in degrees to adjust for the difference in orientation.

TIP: The angles are congured clockwise around the mast of the boat. For example, 90 degrees is on the starboard side of the boat, and 270 degrees is

on the port side.

Conguring the Wind Speed Filter

The wind speed lter governs how quickly the NMEA 2000-compatible display device shows a change in the wind speed. A lower lter setting

shows changes in the wind speed more gradually, and may stabilize the display.

To congure the wind speed lter:

1. While viewing the NMEA 2000 device information, select Cong > Wind Speed Filter.

2. Choose from the following options to adjust the lter settings.

Off—the wind speed data is not ltered.

•

On—select a lower number to show a change in the wind speed more gradually, and help the gauge needle or wind speed number to

•

move or change more steadily.

Auto—automatically adjusts the lter settings based on wind conditions.

•

Conguring the Wind Angle Filter

The wind angle lter governs how quickly the NMEA 2000-compatible display device shows a change in the wind angle. A lower lter setting

shows changes in the wind angle more gradually, and may stabilize the display.

To congure the wind angle lter:

1. While viewing the NMEA 2000 device information, select Cong > Wind Angle Filter.

2. Choose from the following options to adjust the lter settings.

Off—the wind angle data is not ltered.

•

On—select a lower number to update the display device less often, and help the gauge needle or wind angle number to move or change

•

more steadily.

Auto—automatically adjusts the lter settings based on wind conditions.

•

Conguring the GWS 10 if the Filter and Offset Selections Are Not Displayed

Depending on the version of software loaded on your Garmin marine instrument, the specic conguration options may not be displayed on the
conguration screens.

To congure the wind angle offset if the menu option is not displayed:

1. Select Generic Conguration to specify data for the lter and offset settings.

2. Enter the following command: “ANGLEOFFSET=”

3. Follow the command with a number between 0 and 359, in degrees (for example: ANGLEOFFSET=180).

22 Technical Reference for Garmin NMEA 2000 Products

NMEA 2000-Certied Sensor Conguration Information

To congure the wind angle lter if the menu option is not displayed:

1. Select Generic Conguration to specify data for the lter and offset settings.

2. Enter the following command: “ANGLEFILTER=”

3. Follow the command with a number between 0 and 254, representing a time constant in increments of 0.25 second, or 255 to represent the
Automatic setting (for example: ANGLEFILTER=12).

To congure the wind speed lter:

1. Select Generic Conguration to specify data for the lter and offset settings.

2. Enter the following command: “SPEEDFILTER=”

3. Follow the command with a number between 0 and 254, representing a time constant in increments of 0.25 second, or 255 to represent the
Automatic setting (for example: SPEEDFILTER=215).

Technical Reference for Garmin NMEA 2000 Products 23

NMEA 2000-Certied Sensor Conguration Information

24 Technical Reference for Garmin NMEA 2000 Products

NMEA 2000 Checklist

Use this checklist to conrm your NMEA 2000 installation.

Is the NMEA 2000 network connected to power, and is the power balanced correctly on the network? (page 5)

Is the NMEA 2000 network power connected through the ignition switch–if not, did you install a switch? (page 5)

Is the NMEA 2000 power cable grounded? Is the bare wire connected to the same ground location? (page 5)

Is the NMEA 2000 network backbone built using linear construction? (page 4)

Are there terminators on both ends of the NMEA 2000 network? (page 7)

Are all drop cables less than 20 ft. (6 m)? (page 8)

NMEA 2000 Checklist

Technical Reference for Garmin NMEA 2000 Products 25

For the latest free software updates (excluding map data) throughout the life of your

Garmin products, visit the Garmin Web site at www.garmin.com.

© 2009 Garmin Ltd. or its subsidiaries

Garmin International, Inc.

1200 East 151st Street, Olathe, Kansas 66062, USA

Garmin (Europe) Ltd.

Liberty House, Hounsdown Business Park, Southampton, Hampshire, SO40 9RB UK

Garmin Corporation

No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan

www.garmin.com

March, 2009 Part Number 190-00891-00 Rev. B Printed in Taiwan