The GPS100 transmits the following messages (or PGNs):
- PGN 126992 - System Time (Fields: 1-SID, 2-Time Source)
- PGN 128259 - Speed (Fields: 1-SID, 2-Speed Water Referenced, 3- Speed Ground Referenced, 4-Speed Water Referenced Type)
- PGN 129025 - Position Data (Fields: 1-Latitude, 2- Longitude)
- PGN 129026 - COG and SOG Rapid Update (Fields: 1-SID, 2-COG Reference, 4-Course over Ground, 5-Speed over Ground)
- PGN 129029 - GNSS position (Fields: 1-SID, 4-Latitude , 5-Longitude)
- PGN 127258 - Magnetic Deviation (Fields: 1-SID, 5-Variation Source)