Hardware
Copyright © 2015 Coda Octopus Products Ltd
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F180R MOTION Sensor User and Reference Guide
3.1.2.2.11 RMC
The RMC message identifies the UTC time, status, latitude, longitude, speed over ground
(SOG), date, and magnitude variation of the position fix.
Figure 13: NMEA RMC string
UTC time of the position fix in hhmmss.ss format
Status
A = Data valid
V = Navigation receiver warning (V is output whenever the receiver indicates
that something is wrong)
Latitude direction
N = North
S = South
Longitude direction
W = West
E = East
Speed Over Ground (SOG) in knots
Course Over Ground in degree
Magnetic Variation in degrees
Direction of magnetic variation
E = Easterly variation from True course (subtracts from True course)
W = Westerly variation from True course (adds to True course)
Mode indicator
A = Autonomous
D = Differential
N - Data not valid