Similar to NMEA 0183, NMEA 2000 defines standard data formats and definitions, but in addition provides more extensive network management rules for identifying nodes on the network, sending commands to devices, and for requesting data. The CAN automatically provides some of these rules – mostly for control of access to the network, packet transmission, and for error detection. Because it is a network, and because multiple devices can transmit data, a more comprehensive set of rules is required that dictate the behaviour of the members of the network. The NMEA 2000 network allows multiple Electronic devices to be connected together on a common channel for the purpose of easily sharing information. The key difference, apart from the obvious one of operating speed, is that NMEA 0183 is an interface while NMEA 2000 is a network, the NMEA2000 network allows for 2 way data traffic. The CAN bus was originally developed for the automotive industry but is now used in numerous industrial applications. NMEA 2000is a low-cost serial data network operating at 250 Kbit/second utilizing the Controller Area Network (CAN).

NMEA 0183 is a serial data interface operating at 4.8 Kbit/second utilizing standard asynchronous communications. What is the difference between NMEA 0183 and NMEA 2000 (N2K)? The backbone and its accessories provide everything you need for your first NMEA2000 system. The NMEA 2000 N2K Starter Kit will supply a complete data and power network to all your NMEA 2000 marine electronic devices on your boat.

Lowrance nmea 2000 network starter kit