Appendix 4 Digital Interface - Furuno RD-50 Operator's Manual

APPENDIX 4 DIGITAL INTERFACE

Input/output sentences
BWC, BWR, DBK, DBS, DBT, DPT, GGA, GLL, GNS, HDG, HDM, HDT, HTC, HTD, MTW, MWV,
RMB, RMC, ROT, RPM, RSA, VBW, VHW, VLW, VTG, VWR, VWT, WPL, ZDA
Data reception
Data is received in serial asynchronous form in accordance with the standard referenced in IEC
61162-1.
The following parameters are used:
• Baud rate
Input: 4800 bps, IEC 61162-1-2
Output: Same as above. Baud rate fixed at 38400 bps for RD-50.
• Data bits: 8 (D7 = 0), Parity: none, Stop bits: 1
D0 D1
Start
bit
Data sentences: Input/output
BWC - Bearing and distance to waypoint
$--BWC, hhmmss.ss, llll.ll, a, yyyyy.yy, a, x.x, T, x.x, M, x.x, N, c--c, a*hh<CR><LF>
UTC of observation
Note: Positioning system Mode indicator:
A=Autonomous, D=Differential, E=Estimated (dead reckoning),
M=Manual input, S=Simulator, N=Data not valid
The Mode indicator field shall not be a null field.
D2 D3 D4 D5
Data bits
Bearing, degrees true
Waypoint longitude, E/W
Waypoint latitude, N/S
D6 D7
Stop
bit
Checksum
Mode indicator
(see Note)
Waypoint ID
Distance, nautical miles
Bearing, degrees magnetic
AP-5