CONNECTION TO THE N2K BUS

The installation instructions, photographs and conversion tables on this page refer specifically to the N2K0183 gateway. The Nme3Pro also connects to N2K and SeaTalkNG networks and provides bidirectional protocol conversion, but its connections, configuration and supported conversions differ from those of the N2K0183. For information concerning the installation and operation of the Nme3Pro, please consult the Nme3Pro User Manual.

The N2K0183 gateway is an independent project and is not certified by the NMEA organization. It is designed to be compatible with the NMEA 2000® standard but has not undergone formal approval. Use of this device on a marine network is at your own risk. We assume no responsibility for any damage to vessel systems, data corruption, personal injury, or any other loss resulting from the installation or operation of this device. Users are responsible for ensuring the device does not interfere with the safe and proper operation of their vessel's critical systems.

The N2K0183 gateway can be connected to a N2K backbone or to a Raymarine SeaTalkNG backbone. These 2 buses are electrically equivalent and only differ on the type of connectors. You need a cable with stripped wires at the end that connects to the N2K0183 screw terminals, as shown in the picture on the left. 

If you want to connect the N2K0183 multiplexer to a SeaTalkNG backbone you can get Raymarine parts numbers A06043 (1 meter stripped end spur cable) or A06044 (same but 3 meter). If you want to connect the N2K0183 multiplexer to a NMEA2000 backbone you have more options including making yourself the connecting cable using a 5 pin male M12 connector plug (you can get these plugs either with screw or soldering terminals). The plugs are shown on the right of the above picture. The N2K0183 multiplexer also has 2 input and 1 output Nmea0183 ports whose connections should be done as described here. When you connect the output port P2 of the N2K0183 multiplexer to an opto isolated Nmea0183 listener no loop ground around the N2K bus are created. However, if you connect P2 to a single ended input Nmea0183 listener you may not only destroy the multiplexer driver if you connect B2 to GND but also create a ground loop around the N2K bus. This problem is discussed here.

N2K ↔ NMEA 0183 CONVERSIONS

The following tables show the conversions carried out by the N2K0183 multiplexer between Nmea0183 sentences and N2K PGN messages. Further conversions may be implemented in the future.

 Notes:

1 - Max update rate 2Hz,
2 - Max update rate 2Hz, Sent only if SOG is valid and recent
3 - 1Hz max, sent only if Latitude & Systemdate are valid and recent
4 - 1Hz max, sent only if Latitude valid and recent
5 - 1Hz max, sent only if WindAngle valid and recent