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In case of TEXT log format, the file YDNGLOG.TXT is created. Here is an example of the file contents:
06:24:46.758 R 09FD0205 1E AE 01 AA F0 FA FF FF
06:24:46.761 T NMEA0183 !AIVDM,1,1,,B,148KQN7P0JQ7Vv0OSCqnqOwLJDQP,0*6D
!AIVDM,1,1,,B,139Fb6002817Eo2OoELBIQsJHDQP,0*5F
06:24:46.800 R 09F10D00 00 F8 FF 7F 7C 04 FF FF
06:24:46.831 R 1DEFFF01 40 0A E5 98 B6 06 04 04
06:24:46.980 T NMEA0183 $--DTM,W84,,0000.0000,N,00000.0000,E,0.00,W84*78
$--GLL,5514.9091,N,01459.8328,E,042446.74,A,A*71
$--ZDA,042446.97,10,05,2016,02,00*7C
$--MWV,353.4,R,4.4,M,A*3F
06:24:47.057 R 19FA04A3 21 22 42 48 0D 00 00 00
06:24:47.059 R 19FA04A3 22 00 F2 17 C5 22 DC 35
06:24:47.062 R 19FA04A3 23 F0 0A 00 00 00 00 F2
06:24:47.063 R 19FA04A3 25 00 00 00 00 F2 07 97
06:24:47.065 R 19FA04A3 27 00 00 F2 02 8B 18 65
06:24:47.067 R 19FA04A3 29 F2 10 51 0E 16 31 F0
06:24:47.659 R NMEA0183 $ECDTM,W84,,0.000000,S,0.000000,W,0.00,W84*41
‘R’ and ‘T’ (after the record time) indicating the message direction (transmitted or received by Gateway),
‘NMEA0183’ indicates block of lines (or a line) with NMEA 0183 messages and other lines contains NMEA
2000 messages (29-bit identifier and 1 - 8 data bytes in hexadecimal).
In case of BINARY format, the file called YDNGLOG.CAN is creating. It contains NMEA 2000 messages
only. To view, convert or export .CAN files, you may use the free CAN Log Viewer program, which works
on Microsoft Windows, Mac OS X and Linux:
http://www.yachtd.com/products/can_view.html
The .CAN file format is open and described in the CAN Log Viewer documentation.