ComNav G2 & G2B Installation & Operation
Document PN 29010093 V1.5 - 51 -
16 December 2016
Operate in NMEA 2000 Environment
The CAN port NMEA 2000 uses is a bi-direction half-duplex port. G2 outputs data through
standard NMEA 2000 PGNs, and receives proprietary PGNs for system configuration.
NMEA 2000 data output
The data PGNs G2 provides are listed in Table 10.
PGN Description Max. update rate
rate (Hz)
126992 System time 10 1
127250 Vessel heading 20 10
127251 Rate of turn 20 10
127257 Attitude 10 1
127258 Magnetic variation 10 1
129025 Position, rapid update 20 10
129026 COG & SOG, rapid update 20 4
129029 GNSS position data 10 1
129033 Time & date 10 1
129538 GNSS control status (on request) n/a
129539 GNSS DOPs 5 1
129545 GNSS RAIM output (on request) n/a
126993 System heartbeat 1 0.0167
Table 10 - List of data PGNs and default update rates
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