NMEA 2000 bus crash

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum George,

We have not received any reports of a/c/e/eS/gS-Series MFDs crashing a SeaTalkng/NMEA 2000 bus. Should the problem be intermittent, then it may be challenging to identify the faulty component. The most common reasons for problems with a SeaTalkng/NMEA 2000 bus are:
- failure to properly terminate the SeaTalkng/NMEA 2000 backbone ... two terminators , one at each of the extreme ends of the backbone
-networking component failure ... inspect networking components for signs of corrosion or damage. Check components for pin/lead to pin/lead continuity and verify that no shorts are detected between pins/leads
- insufficient power ... verify that the power insertion point is located at the approximate mid-point of the backbone's LEN load. Verify that the batteries supplying the circuit are in good working order (load test) and have been fully charged. After fully charging the batteries, the system should be tested while the vessel is connected to shore power.
- ground loop ... resulting from improperly powering the SeaTalkng / NMEA 2000 backbone
- product failure ... Faulty products are most commonly be identified through fault isolation ... after verifying the above listed items, then the bus would be reduced to two components (recommend that you start with the devices at the extreme ends of the backbone). The system would then be exercised and when confident that these components are functioning, an additional component would be added (recommend adding components from the extreme ends of the backbone, working toward the middle of the backbone).

Should a faulty device or networking component identified, then it should either be replaced or serviced.