Fuel usage problem

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum garball44,

Fuel Tank Levels are not determined using PGN 127497. They are determined using PGN 127505 - Fluid Level. Should you examine screen snapshot which you had attached to the thread, you will find the that the instance number for the fluid sensor is 6. Should the vessel feature a single fuel tank, then the NMEA 2000 fuel sending device must be configured as instance 0. For vessels having more than one fuel tank, the convention used by most NMEA 2000 compatible products is to assign instance 0 to the port-most tank sensor and then assign incremented instance numbers to each tank moving from port to starboard. In this way, a vessel with three fuel tanks would assign instance 0 to the port tank, instance 1 to the center tank, and instance 2 to the starboard tank. It is correspondingly recommended that the manufacturer of the source devices transmitting PGN 127505 be contacted regarding how to change its instance number and that its instance number then be changed accordingly.