Frustration is rampant.  After the FloScan units were installed and all of the NMEA connectivity was in place, we started the engines, turned on the Raymarine E80 display and lo and behold, no fuel data appeared on the display. Gallons per hour and total gallons burned data however was displayed on the FloScan LCD screens. Between all of the vendors and suppliers involved, they could not determine why there was no data on the E80.  We went back into the system under the guidance of the contractors and manufacturers  and  attempted to bring the system online from scratch.  First problem encountered was that the Floscans required that a code be set in each unit to designate port and starboard with the port display set to zero and the starboard display set to one.  We found both displays set to the factory setting of zero.  All involved thought  that setting the correct codes would fix the problem.  Not true, We set the port unit to zero and the starboard unit to one and still no data displayed on the Raymarine E80.  We then got on the phone with Joe Ferrara who is  conducting some serious testing on the  FloScan/Raymarine configuration and under his guidance, we both entered the same identical keystrokes and menu/option selections to get the Raymarine gear to display the fuel data.  His system came up and displayed the fuel data without any problem.  Our E80 still did not display any data.  Floscan is sending us a Fuel-Tron  display unit that we will use to replace the E80 connection  to the output from the NMEA backbone next week.   This should prove that the FloScans are sending the fuel data to and through the NMEA network.  Alcom has purchased a NMEA test set and will also test the output signal (if there is one) between the NMEA network and the E80 display.  Since not having the Fuel data display on the E80  does not stop  us from using the boat, we carefully put all of the hanging cables back in place and buttoned up the helm access so that we can take the boat out on Saturday.  All of the testing will start again on Tuesday of next week.  And the beat goes on……