Seiwa Si-Tex Vector 3D GPS - Manual (Page 42)

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Vector 3D User Guide
Table C-1: NMEA 2000 Messages
PG Number
(PGN)
Description Level
Default
Update
Rate
Freq
127257 Attitude -is PGN provides a
single transmission that describes
the position of a vessel relative to
both horizontal and vertical
planes. This would typically be
used for vessel stabilization,
vessel control and onboard
platform stabilization. B 1000 1
127258 Magnetic Variation - Message for
transmitting variation. The
message contains a sequence
number to allow synchronization
of other messages such as
Heading or Course over Ground.
The quality of service and age of
service are provided to enable
recipients to determine an
appropriate level of service if
multiple transmissions exist. 1000 1
128259 Speed - The purpose of this PGN
is to provide a single
transmission that describes the
motion of a vessel. B 1000 1
129025 Position, Rapid Update - This
PGN provides latitude and
longitude referenced to WGS84.
Being defined as single frame
message, as opposed to other
PGNs that include latitude and
longitude and are defined as fast
or multi-packet, this PGN lends
itself to being transmitted more
frequently without using up
excessive bandwidth on the bus
for the benefit of receiving
equipment that may require rapid
position updates. B 100 10
129026 COG & SOG, Rapid Update -
This PGN is a single frame PGN
that provides Course Over
Ground (COG) and Speed Over
Ground (SOG). B 250 4