Furuno ECDIS FMD-3100 Installation Manual page 68

APPENDIX 3 DIGITAL INTERFACE
HDT - Heading, true
$--HDT, xxx.x,T*hh<CR><LF>
1 2
1. Heading, degrees (0.00 to 360.00)
2. True (T)
MTW - Water temperature
$--MTW,x.x,C<CR><LF>
1
1. Water temperature, degrees C (-100.000 to 100.000)
MWV - Wind speed and angle
$--MWV,x.x,a,x.x,a,A*hh<CR><LF>
1 2 3 4 5
1. Wind angle, degrees (0.00 to 360.00)
2. Reference (R/T, R=Relative, T=Theoretical)
3. Wind speed (0.00 to 9999.99)
4. Wind speed units (K=km/h M=m/s N=knots S=mph)
5. Status (A=data valid V=data invalid)
NRM - NAVTEX receiver mask
$--NRM, x,x,hhhhhhhh,hhhhhhhh,a*hh<CR><LF>
1 2 3
1. Function code
0 = request messages for the given mask
1 = set/report the storage mask
2 = set/report the printer mask
3 = set/report the INS mask
4 to 9 = reserved
2. Frequency table index
1 = 490 kHz
2 = 518 kHz
3 = 4209.5 kHz
4 to 9 = reserved
3. Transmitter coverage area mask
4. Message type mask
5. Sentence status flag
R = status report of current settings
C = configuration command to change settings
AP-12
4 5