Furuno FMD3100 - ARC - Alert Command Refused; CUR - Current; DBT - Depth below Transducer; DPT - Depth

APPENDIX 3 DIGITAL INTERFACE
AP-9
ARC - Alert command refused
CUR - Current
DBT - Depth below transducer
DPT - Depth
DTM - Datum reference
$**ARC,hhmmss.ss,aaa,x.x,x.x,c*hh<CR><LF>
1 2 3 4 5
1. Release time of the Alert Command Refused(UTC)
2. Used for proprietary alerts, defined by the manufacturer
3. The alert identifier(1-9999999)
4. The alert instance(1to-99)
5. Refused Alert Command(A, Q, O, S)
A=acknowledge: A
Q=request/repeat information
O=responsibility transfer
S=silence
$--CUR,A,x,x.x,x.x,x.x,a,x.x,x.x,x.x,a,a*hh<CR><LF>
1 2 3 4 5 6 7 8 9 1011
1. Validity of data (A=valid, V=not valid)
2. Data set number (0 - 9)
3. Layer number (0.0 - 3.0)
4. Current depth in meters (No use)
5. Current direction in degrees (0.00 - 360.00)
6. Direction reference in use (true or relative)
7. Current speed in knots (0.00 - 99.99)
8. Reference layer depth in meters (No use)
9. Heading (0 to 360.00)
10. Heading reference in use (true or magnetic)
11. Speed reference (B=Bottom track W=Water track P=Positioning system)
$--DBT,xxxx.x,f,xxxx.x,M,xxxx.x,F*hh<CR><LF>
1 2 3 4 5 6
1. Water depth (0.00-99999.99)
2. feet
3. Water depth (0.00-99999.99)
4. Meters
5. Water depth (0.00-99999.99)
6. Fathoms
$--DPT,x.x,x.x,x.x*hh<CR><LF>
1 2 3
1. Water depth relative to the transducer, meters (0.00-99999.99)
2. Offset from transducer, meters
(No use)
3. Minimum range scale in use (No use)
$--DTM,ccc,a,x.x,a,x.x,a,x.x,ccc*hh<CR><LF>
1 2 3 4 5 6 7 8
1. Local datum (W84=WGS84 W72=WGS72 S85=SGS85, P90=PE90
2. Local datum subdivision code (NULL or one character)
3. Lat offset, min (0 - 59.99999)
4. N/S
5. Lon offset, min (0 - 59.99999)
6. E/W
7. Altitude offset, meters (No use)
8. Reference datum (W84=WGS84 W72=WGS72 S85=SGS85, P90=PE90)