Raymarine e7 - 3.3 Display power; 3.4 Controls

2.8Systemprotocols
YourMultifunctionDisplaycanconnecttovariousinstrumentsand
displaystoshareinformationandsoimprovethefunctionalityof
thesystem.Theseconnectionsmaybemadeusinganumberof
differentprotocols.Fastandaccuratedatacollectionandtransferis
achievedbyusingacombinationofthefollowingdataprotocols:
•SeaT alk
hs
•SeaT alk
ng
•NMEA2000
•SeaT alk
•NMEA0183
Note:Youmayndthatyoursystemdoesnotuseallofthe
connectiontypesorinstrumentationdescribedinthissection.
SeaTalk
hs
SeaTalk
hs
isanethernetbasedmarinenetwork.Thishighspeed
protocolallowscompatibleequipmenttocommunicaterapidlyand
sharelargeamountsofdata.
InformationsharedusingtheSeaT alk
hs
networkincludes:
•Sharedcartography(betweencompatibledisplays).
•Digitalradardata.
•Sonardata.
Seatalk
ng
SeaTalk
ng
(NextGeneration)isanenhancedprotocolforconnection
ofcompatiblemarineinstrumentsandequipment.Itreplacesthe
olderSeaT alkandSeaTalk
2
protocols.
SeaTalk
ng
utilizesasinglebackbonetowhichcompatible
instrumentsconnectusingaspur.Dataandpowerarecarriedwithin
thebackbone.Devicesthathavealowdrawcanbepoweredfrom
thenetwork,althoughhighcurrentequipmentwillneedtohavea
separatepowerconnection.
SeaTalk
ng
isaproprietaryextensiontoNMEA2000andtheproven
CANbustechnology.CompatibleNMEA2000andSeaTalk/
SeaTalk
2
devicescanalsobeconnectedusingtheappropriate
interfacesoradaptorcablesasrequired.
NMEA2000
NMEA2000offerssignicantimprovementsoverNMEA0183,most
notablyinspeedandconnectivity.Upto50unitscansimultaneously
transmitandreceiveonasinglephysicalbusatanyonetime,
witheachnodebeingphysicallyaddressable.Thestandard
wasspecicallyintendedtoallowforawholenetworkofmarine
electronicsfromanymanufacturertocommunicateonacommon
busviastandardizedmessagetypesandformats.
SeaTalk
SeaTalkisaprotocolwhichenablescompatibleinstrumentsto
connecttoeachotherandsharedata.
TheSeaT alkcablesystemisusedtoconnectcompatible
instrumentsandequipment.Thecablecarriespoweranddataand
enablesconnectionwithouttheneedforacentralprocessor.
AdditionalinstrumentsandfunctionscanbeaddedtoaSeaT alk
system,simplybypluggingthemintothenetwork.SeaT alk
equipmentcanalsocommunicatewithothernon-SeaTalkequipment
viatheNMEA0183standard,providedasuitableinterfaceisused.
Planningtheinstallation
29