Nmea 2000; Nmea 0183 - Advanced Navigation GC-SER-LC Reference Manual

9.4

NMEA 2000

The GNSS Compass permanently outputs the NMEA 2000 messages listed in Table 22 below.
PGN
126992 System Time
UTC time and date
126993 Heartbeat
Transmitted by all NMEA devices to indicate the device
is still present on the network. Reception of this PGN
may also be used to maintain an address to NAME
association table within the receiving device.
127250 Vessel Heading
True and magnetic heading
127251 Rate of Turn
Rate of change of the heading
127252 Heave
Vertical distance relative to the average sea level
127257 Attitude
Orientation of the vessel
129025 Position, Rapid Update
Rapid update of latitude and longitude
129026 COG & SOG, Rapid Update
Rapid update of Course Over Ground (COG) and
Speed Over Ground (SOG)
129029 GNSS Position Data
Position and GNSS fix status
129540 GNSS Satellites in View
130578 Vessel Speed Components
Longitudinal and transverse speed
Table 22: NMEA 2000 transmitted messages
9.5

NMEA 0183

The GNSS Compass supports outputting the version 4.10 compliant NMEA 0183 messages over
both Serial and Ethernet connections.
Serial data is output on the Secondary serial port. Each message can be enabled or disabled and
output rates are configurable.
Ethernet messages are enabled by default, however can be selectively disabled. The minimum
rate is 1 Hz, except for GPHBT & TSS1 whereby the minimum is as indicated in Table 11. NMEA
0183 broadcast packets are sent via multicast to IP address 239.192.0.4. These are sent
Description
GNSS Compass Reference Manual
Page 39 of 85
Version 1.1
13/01/2021
Output Period
(milliseconds)
1000
60000
100
100
100
1000
100
250
1000
1000
250
Rate (Hz)
1
10
10
10
1
10
4
1
1
4