Furuno FR-10 Operator's Manual page 147

HDG - Heading, Deviation and Variation
$**HDG, x.x, x.x, a, x.x, a *hh<CR><LF>
1 2 3 4 5
1. Magnetic sensor heading, degrees (0.0 to 360.0)
2. Magnetic deviation, degrees (0.0 to 180.00)
3. E/W
4. Magnetic variation, degrees (0.0 to 180.00)
5. E/W
HDM - Heading, Magnetic
$ ** HDM, x.x, M *hh <CR><LF>
1 2
1. Heading, degrees (0.0 to 360.0)
2. Magnetic (M)
HDT - Heading, True
$**HDT, xxx.x, T *hh<CR><LF>
1 2
1. Heading, degrees (0.0 to 360.0)
2. True (T)
RMB - Recommended Minimum Specific Navigation Information
$**RMB, A, x.x, L, CCCC, CCCC, xxxx.xx, a, xxxxxx.xx, a, xxx.x, xxx, xx.x, A, a *hh <CR><LF>
1 2 3
1. Data status (A=Data valid; V=Navigation receiver warning)
2. Cross track error (NM) (not used)
3. Direction to steer (L/R) (not used)
4. Origin waypoint ID (not used)
5. Destination waypoint ID (up to 15 characters)
6. Destination waypoint latitude (0000.0000 to 9000.0000)
7. N/S
8. Destination waypoint longitude (0000.0000 to 18000.0000)
9. E/W
10. Range to destination, nautical miles (00000.0000 to 10000.0000)
11. Bearing to destination, degrees true (0.0 to 360.0)
12. Destination closing velocity, knots (not used)
13. Arrival status (not used)
14. Mode indicator (A= Autonomous; D= Differential; E=Estimated; M=Manual input;
S= Simulator; N=Data not valid)
4 5 6 7
APPENDIX 3 DIGITAL INTERFACE
8 9 10 11 12 13 14
AP-11