[CA] No Navigation Data message

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Steve,

Please note that Track mode may only be commanded after having satisfied the following conditions:
- the system has acquired a GPS position FIX
- the system's chartplotting device has been commanded to navigate to a waypoint/cursor position or to follow a route ... doing so would then trigger the system's chartplotting device to transmit the associated navigation data to the SeaTalkng / NMEA 2000 backbone permitting the autopilot to then be commanded into Track mode.

Failure to satisfy the above listed prerequisites will cause the autopilot's control head to report No Navigation Data.

Should the p70 Autopilot Autopilot Control Head's diagnostics (MENU->SET-UP->DIAGNOSTICS->ABOUT SYSTEM) list each of the system's Raymarine SeaTalkng / NMEA 2000 devices, then the Raymarine system would be deemed to be operating properly. Attention should then be focussed on verifying the communications path between the third party chartplotting product and the SeaTalkng backbone. Should the above have been satisfied and should the problem persist, then it would be recommended that a Certified Raymarine Installer be contacted to temporarily interface a Raymarine MFD running LightHouse II software to the system, use your chartplotter configure the system to meet the conditions specified above, and then log the SeaTalkng / NMEA 2000 communications for approximately 5 minutes using the Raymarine MFD running LightHouse II software. The saved SeaTalkng log file may then be attached to this thread for further analysis.