Micro : the finest, supporting up to 4 Amperes and a length for the network ( Backbone ) up to 100 meters.Mini : the thickest, can support a supply current to 8 Amperes and a length for the network( backbones) up to 200 meters.DeviceNet is associated with technology CAN bus in the automotive industry for data transfer.įor marine, NMEA 2000® defined three cable sizes : Only this type of cable can use the label 'NMEA 2000® Approved'.

NMEA 2000® approved a single standard wiring : DeviceNet. NMEA2000 T-connectors and cables (from left to right) Lowrance, Garmin, Airmar, Maretron, Raymarine and Simrad Such a system is Plug & Play, devices are identified by the system upon connection (As with a computer's USB ports). This protocol uses a compact binary message format (PGN), and uses the arbitration of messages based on priority. It can accept up to 50 devices each with 254 addresses and data transfers up to 250 Kb/s. NMEA 2000® defines high-speed network in a new communication protocol. Designed to operate in harsh environments, NMEA 2000® uses the principle of a differential pair of wires in a standardized cabling, chosen for its insensitivity to noise and allows up 200 meters long in disturbed areas.

It also aims to interconnect equipment provided by various manufacturers and brands, allowing boat builders and end users great freedom in their choice of navigational instruments.īased on the protocol Controller Area Network (or CAN bus) developed by Bosch and Intel, used for decades in the automotive and automation, it enables communication of all devices to the standard 'NMEA 2000® Certified', whatever the manufacturer, simply by connecting to the network. NMEA 2000® ( ¹) is a standard for electronic communication network specifically designed for pleasure boats, according to an industry standard published by the National Marine Electronics Association (NMEA). It aims to meet many needs, arising from the considerable increase of electronic devices onboard, the widespread use of computers and MFDs ( ²) with control and navigation application more sophisticated.

Maretron nmea 2000 components