ProNav Norway – a
Company
page 57
Rev.2
10.02.2020
NMEA 2000 Messages
,
Continued
V200n
NMEA 2000
transmitted
messages
,
continued
Table C-2: NMEA 2000 transmitted messages (continued)
PGN
Description
Default
Update Rate
(msec)
Freq (Hz)
127257 Altitude
Provides a single transmission that describes
the position of a vessel relative to both
horizontal and vertical planes.
Altitude can be used for vessel stabilization,
vessel control and onboard platform
stabilization.
1000
1
127258 Magnetic Variation
Message for transmitting variation.
The message contains a sequence number
to synchronize other messages such as
Heading or Course over Ground.
The quality of service and age of service are
provided to determine appropriate level of
service if multiple transmissions exist.
1000
1
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