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[Chuck - Raymarine - Moderator]

DO335,

The p70 Autopilot Autopilot Control Head's diagnostics may also be used to the determine the version of software which is presently installed within each of the Raymarine devices. It is quite possible that early Evolution autopilot component software may conflict with one of the recently added third party devices. It is recommended that the software version of each Raymarine component be noted an then checked against the latest available Raymarine product software updates. As your system doesn't feature a Raymarine MFD, it would be necessary to have the software within any components needing an update be performed by a Certified Raymarine Installer or sent to Raymarine’s Product Repair Center to receive the software update(s).

Should all Raymarine device have been updated with the latest software and should the problem persist, then it would be recommended that any new components be temporarily unplugged from the NMEA 2000 backbone and that the system then be tested again. Components may then be added one by on until the problem re-occurs. As indicated previously, it would then 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.