Garmin NMEA 2000 Technical Reference Download Page 18

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NMEA 2000 Sailing Data

Data Type

PGN Data Required

Typical Sender

Apparent wind speed

130306: Wind data

Wind sensor

Apparent wind angle

130306: Wind data

Wind sensor

True wind speed

128259: Water speed
130306: Wind data

Wind sensor and a water speed sensor

True wind speed (less-accurate

)

129026: COG/SOG
129029: GNSS position
130306: Wind data

Wind sensor and a GPS antenna

True wind angle

128259: Water speed
130306: Wind data

Wind sensor and a water speed sensor

True wind angle (less-accurate

)

129026: COG/SOG
129029: GNSS position
130306: Wind data

Wind sensor and a GPS antenna

Wind Velocity Made Good (VMG)

128259: Water speed
130306: Wind data

Wind sensor and a water speed sensor

Wind VMG (less-accurate

)

129026: COG/SOG
129029: GNSS position
130306: Wind data

Wind sensor and a GPS antenna

Waypoint VMG

129284: Nav data

Garmin chartplotter and a GPS antenna

Maximum apparent wind speed

130306: Wind data

Wind sensor

Maximum true wind speed

128259: Water speed
130306: Wind data

Wind sensor and a water speed sensor

Maximum true wind speed (less-
accurate

)

129026: COG/SOG
129029: GNSS position
130306: Wind data

Wind sensor and a GPS antenna

Opposite tack heading

127250: Vessel heading
128259: Water speed
130306: Wind data

A wind sensor, a heading sensor, and a water
speed sensor

Opposite tack heading (less-
accurate

)

129026: COG/SOG
129029: GNSS Position
127250: Vessel heading
130306: Wind data

A wind sensor, a heading sensor, and a GPS
antenna

If a water speed sensor is not present, a less-accurate reading can be calculated using a GPS antenna instead.

Summary of Contents for NMEA 2000

Page 1: ...Types page 12 What is NMEA 2000 NMEA 2000 is a plug and play communications standard used for connecting marine sensors and display devices within ships and boats and is considered the successor to the NMEA 0183 serial data bus standard You can learn more about NMEA 2000 and purchase the NMEA 2000 standard documentation at nmea org content STANDARDS NMEA_2000 Garmin uses NMEA 2000 micro connectors...

Page 2: ... of the backbone Network Termination page 11 Female termi nator 010 11081 00 You must install terminators on both ends of the backbone Power cable 010 11079 00 Connects the NMEA 2000 network to a 12 Vdc power source Power Connection Considerations page 7 2 m 6 5 ft 3 A fuse included Backbone or drop cable 010 11076 03 0 3 m 1 ft 010 11076 00 2 m 6 5 ft 010 11076 04 4 m 13 ft 010 11076 01 6 m 20 ft...

Page 3: ...t to the top of a T connector or to the side of an in line terminator Linear Backbone Construction page 6 In line Terminator A special terminator that can be used in place of a male terminator not available as a female connector that allows direct connection to the a device at the end of the NMEA 2000 backbone The inline terminator simplifies installation by not requiring a T connector male termin...

Page 4: ...nect to the network You should note the approximate location on the boat for the backbone and each of the connected devices You should measure the distances between the location of each device and the backbone and you should measure the overall length of the backbone You should note the power consumption LEN of each connected device After you create a diagram of your network you should apply the p...

Page 5: ...re a separate power connection Consult the installation instructions for each device you connect to your NMEA 2000 network to make sure you supply power to the device appropriately Wind sensor Chartplotter or multifunction device MFD Antenna GPS or satellite Marine instrument Ignition or in line switch and fuse 12 Vdc power source Drop cable Female terminator Backbone extension cable T connector M...

Page 6: ... connector in the backbone NMEA 2000 devices and power NMEA 2000 drop cables and network power cables must connect to the top of a T connector and never to the sides Backbone cable If needed the backbone can be extended using a cable connected to the sides of a T connector The maximum length of a single backbone cable is 100 m 328 ft Male terminator The terminator must connect to the side of the l...

Page 7: ...age the NMEA 2000 network components or devices The dedicated NMEA 2000 power cable should connect to the power source through the auxiliary power switch on the boat If there is not an auxiliary power switch or if connecting to the auxiliary power switch causes electrical interference you must connect the power cable to the power source through an in line switch The dedicated NMEA 2000 power cable...

Page 8: ...alue is 0 053 Distance Refers to the distance from the power connection to the device located furthest away on the network in meters Load Refers to the network load The network load is the sum of the LEN numbers of all devices from the power connection to the end of the network When evaluating the results of your calculation consider the following If you calculate a voltage drop of 1 67 Vdc or les...

Page 9: ...signed Incorrectly Power cable Length 2 m Drop cable Length 2 m Drop cable Length 4 m Drop cable Length 6 m Backbone cable Length 10 m Backbone cable Length 6 m When the voltage drop formula is applied to this example the voltage drop is greater than 1 67 Vdc This NMEA 2000 network will not function correctly when powered at the end to function correctly this NMEA 2000 network must be redesigned w...

Page 10: ...nce Distance Load 0 1 Voltage drop 0 053 14 2 10 2 4 0 1 0 30 Vdc Voltage Drop to the Right of the Power Connection Resistance Distance Load 0 1 Voltage drop 0 053 12 2 6 4 12 5 7 0 1 0 80 Vdc Power Isolation Some NMEA 2000 devices such as a boat engine provide power to the NMEA 2000 network In some cases this may be sufficient to provide the appropriate power to the network but in other cases thi...

Page 11: ...is too bulky for the area you can use an in line terminator instead of the final T connector on the backbone You can connect the final device to the in line terminator using the appropriate length of drop cable or connect the final device directly to the in line terminator without using a drop cable An in line terminator may be useful when connecting a wind sensor or other device at the top of a m...

Page 12: ...h mini connectors Power You must determine whether the existing NMEA 2000 network is connected to a power source because an NMEA 2000 network must connect to power to function correctly Power Connection Considerations page 7 If you must connect power to the NMEA 2000 network at more than one location you must install a power isolator in the backbone between the two power connections Power Isolatio...

Page 13: ...oost pressure 127489 Dynamic engine parameters NMEA 2000 compatible engine Trim 127489 Dynamic engine parameters 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 NMEA 2000 Fuel Information Data Type PGN Data Required Typical Sender Total fuel flow rate 127489 Dynamic eng...

Page 14: ...oute 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 129029 GNSS position GPS ante...

Page 15: ...PS antenna Average GPS speed 129026 COG and SOG 129029 GNSS position data GPS antenna Maximum GPS speed 129026 COG and SOG 129029 GNSS position data 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 15 ...

Page 16: ...or Wind direction 127250 Vessel heading 128259 Water speed 129026 COG SOG 129029 GNSS position 130306 Wind data A wind sensor a water speed sensor a heading sensor and a GPS antenna Wind direction less accurate1 129026 COG SOG 129029 GNSS position 130306 Wind data A wind sensor and a GPS Antenna Wind direction less accurate2 127250 Vessel heading 128259 Water speed 130306 Wind data A wind sensor a...

Page 17: ... scale less accurate2 129026 COG SOG 129029 GNSS position 130306 Wind data A wind sensor and a GPS Antenna Beaufort scale less accurate1 127250 Vessel heading 128259 Water speed 130306 Wind data A wind sensor a water speed sensor and a heading sensor Sunrise sunset 129026 COG SOG 29029 GNSS position GPS antenna 1 If a GPS antenna is not present a less accurate reading can be calculated using only ...

Page 18: ...ensor Wind VMG less accurate1 129026 COG SOG 129029 GNSS position 130306 Wind data Wind sensor and a GPS antenna Waypoint VMG 129284 Nav data Garmin chartplotter and a GPS antenna Maximum apparent wind speed 130306 Wind data Wind sensor Maximum true wind speed 128259 Water speed 130306 Wind data Wind sensor and a water speed sensor Maximum true wind speed less accurate1 129026 COG SOG 129029 GNSS ...

Page 19: ...heading 128259 Water speed 129026 COG and SOG 129029 GNSS position data A GPS antenna a water speed sensor and a heading sensor Drift 127250 Vessel heading 128259 Water speed 129026 COG SOG 129029 GNSS position A GPS antenna a water speed sensor and a heading sensor NMEA 2000 System Data Data Type PGN Data Required Typical Sender Time of day 129026 COG SOG 129029 GNSS position data GPS antenna Dat...

Page 20: ... 2008 Garmin Ltd or its subsidiaries support garmin com ...

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