Garmin GPSMAP 12x3 Owner's Manual page 206

PGN Description
130312 Temperature (obsolete)
Transmit
PGN Description
126464 Transmit and receive PGN list group function
126984 Alert Response
127497 Trip parameters: Engine
Receive
PGN Description
065030 Generator average basic AC quantities (GAAC)
126983 Alert
126985 Alert text
126987 Alert threshold
126988 Alert value
126992 System time
127251 Rate of turn
127252 Heave
127257 Attitude
127498 Engine parameters: Static
127503 AC input status (obsolete)
127504 AC output status (obsolete)
127506 DC detailed status
127507 Charger status
127509 Inverter status
128000 Nautical leeway angle
128275 Distance log
129038 AIS class A position report
129039 AIS class B position report
129040 AIS class B extended position report
129044 Datum
129285 Navigation: Route, waypoint information
129794 AIS class A static and voyage related data
129798 AIS SAR aircraft position report
192 Appendix