7
Input and Output
Data transmission for NMEA0183
Data transmission adpots NMEA0183 format and conforms
IEC61162-1 standards.
Date is transmitted in serial asynchronous form. 4800 baud rate is
4800, 8-bit data, no parity bit and one stop bit.
GPS data input—RMC
$--RMC,hhmmss.ss,A,llll.ll,a,yyyyy.yy,a,x.x,x.x,xxxxxx,x.x,a*h
h<CR><LF>
(1) UTC of position fix
(2) Status, A=data valid, V=navigation receiver warning
(3) Latitude
(4) Latitude, N/S
(5) Longitude
(6) Longitude, E/W
(7) Speed over ground, knots
(8) Course over ground, degree true
(9) UTC date， dd/mm/yy
(10) Magnetic variation, degree, E/W
(11) Mode indicator, A=Autonomous mode
D=Differential mode
E=Estimated（dead reckoning）mode
M=Manual input mode
S=Simulator mode
N=Data not valid
(12) Checksum value
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