Garmin ECHOMAP ULTRA 2 Owner's Manual page 161

Transmit
PGN Description
126464 Transmit and receive PGN list group function
126984 Alert response
127258 Magnetic variance
127502 Switch bank control
129025 Position: Rapid update
129026 COG and SOG: Rapid update
129029 GNSS position data
129283 Cross track error
129284 Navigation data
129285 Navigation route and waypoint info
Receive
PGN Description
065240 ISO commanded address
126983 Alert
126985 Alert text
126987 Alert threshold
126988 Alert value
126992 System time
127237 Heading/tack control
127245 Rudder
127250 Vessel heading
127251 Rate of turn
127252 Heave
127257 Attitude
127488 Engine parameters: Rapid update
127489 Engine parameters: Dynamic
127493 Transmission parameters: Dynamic
127498 Engine parameters: Static
127501 Switch bank status
127503 AC input status
127504 AC output status
Appendix 151