ProNav Norway – a
Company
page 56
Rev.2
10.02.2020
NMEA 2000 Messages
,
Continued
V200n
NMEA 2000
transmitted
messages
Table C-2: NMEA 2000 transmitted messages
PGN
Description
Default
Update Rate
(msec)
Freq (Hz)
126992 System Time
The purpose of this PGN is twofold:
1)
To provide a regular transmission of
UTC time and date, and
2)
To provide synchronism for
measurement data
1000
1
126993 Heartbeat
Confirms a device is still present on the
network.
60000
1/60
127250 Vessel Heading
Heading sensor value with a flag for True or
Magnetic.
If the sensor value is Magnetic, the deviation
field can be used to produce a Magnetic
heading, and the variation field can be used
to correct the Magnetic heading to produce
a True heading.
100
10
127251 Rate of Turn
Rate of change of heading.
100
10
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