23
RMC – Recommended Minimum Specific GNSS Data
This message transmits the necessary navigation data, such as time, position,
speed, course, and so on.
$GPRMC,rmc1,rmc2,rmc3,rmc4,rmc5,rmc6,rmc7,rmc8,rmc9,r
mc10,rmc11,rmc12*hh<CR><LF>
Parameters
Descriptions
Notes
rmc1
UTC time as position is fixed
hhmmss.sss: hh – hour; mm –
minute; ss.sss – second
rmc2
Status of position fix
A – data valid, which includes the
scenarios of 2D, 3D, and DR.
V – navigation receiver warning
rmc3
Latitude
ddmm.mmmmmm: dd – degree;
mm.mmmmmm – minute (0
o
~
90
o
)
rmc4
Latitude sector
N – North; S – South
rmc5
Longitude
dddmm.mmmmmm: ddd –
degree; mm.mmmmmm –
minute (0
o
~ 180
o
)
rmc6
Longitude sector
E- East; W- West
rmc7
Speed over ground (SOG)
x.xxx knots
rmc8
Course over ground (COG)
Referenced to true north (xx.xx
degrees)
rmc9
UTC Date
ddmmyy: dd – day; mm – month;
yy – year
rmc10
Magnetic variation
Not supported
rmc11
Direction of magnetic variation Not supported
rmc12
Navigation mode indicator
A – Autonomous mode (fix);
D – Differential mode (fix);
E – DR (fix);
N – not valid
hh
Checksum
hex number (2 – character)
<CR><LF> End of message