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AgGPS 332 GPS Receiver User Guide 91
NMEA-0183 Messages C
C.11RMC (Recommended Minimum Specific GPS
Data)
The RMC message identifies the UTC time, status, latitude, longitude,
speed over ground (SOG), date, and magnetic variation of the position
fix.
The RMC message structure is:
$GPRMC,184804.00,A,3723.476543,N,
12202.239745,W,000.0,0.0,051196,15.6,E*7C
Table C.11 describes these fields.
Table C.11 RMC message fields
Field Description
1 Time: UTC time of the position fix in hhmmss.ss format
2 Status
Valid
V: Navigation Receiver Warning (V is output whenever the
receiver suspects something is wrong)
3 Latitude coordinate (the number of decimal places, 0–7, is
programmable and determined by the numeric precision selected
in TSIP Talker for a RMC message)
4 Latitude direction
N = North, S = South
5 Longitude coordinate (the number of decimal places, 0–7, is
programmable and determined by the numeric precision selected
in TSIP Talker for a RMC message)
6 Longitude direction
W: West
E: East
7 Speed Over Ground (SOG) in knots (0–3 decimal places)
8 Track Made Good, True, in degrees
9 Date in dd/mm/yy format
10 Magnetic Variation in degrees