Raymarine e7 Installation Instructions Manual

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Contents

Raymarine e7 Installation Instructions Manual Manual pdf 29 page image

2.8 System protocolsYour Multifunction Display can connect to various instruments anddisplays to share information and so improve the functionality ofthe system. These connections may be made using a number ofdifferent protocols. Fast and accurate data collection and transfer isachieved by using a combination of the following data protocols:• SeaTalkhs• SeaTalkng• NMEA 2000• SeaTalk• NMEA 0183Note: You may find that your system does not use all of theconnection types or instrumentation described in this section.SeaTalkhsSeaTalkhs is an ethernet based marine network. This high speedprotocol allows compatible equipment to communicate rapidly andshare large amounts of data.Information shared using the SeaTalkhs network includes:• Shared cartography (between compatible displays).• Digital radar data.• Sonar data.SeatalkngSeaTalkng (Next Generation) is an enhanced protocol for connectionof compatible marine instruments and equipment. It replaces theolder SeaTalk and SeaTalk2 protocols.SeaTalkng utilizes a single backbone to which compatibleinstruments connect using a spur. Data and power are carried withinthe backbone. Devices that have a low draw can be powered fromthe network, although high current equipment will need to have aseparate power connection.SeaTalkng is a proprietary extension to NMEA 2000 and the provenCAN bus technology. Compatible NMEA 2000 and SeaTalk /SeaTalk2 devices can also be connected using the appropriateinterfaces or adaptor cables as required.NMEA 2000NMEA 2000 offers significant improvements over NMEA 0183, mostnotably in speed and connectivity. Up to 50 units can simultaneouslytransmit and receive on a single physical bus at any one time,with each node being physically addressable. The standardwas specifically intended to allow for a whole network of marineelectronics from any manufacturer to communicate on a commonbus via standardized message types and formats.SeaTalkSeaTalk is a protocol which enables compatible instruments toconnect to each other and share data.The SeaTalk cable system is used to connect compatibleinstruments and equipment. The cable carries power and data andenables connection without the need for a central processor.Additional instruments and functions can be added to a SeaTalksystem, simply by plugging them into the network. SeaTalkequipment can also communicate with other non-SeaTalk equipmentvia the NMEA 0183 standard, provided a suitable interface is used.Planning the installation 29