Specifications

Command/Response Formats 175
Commands
$PASHQ,RMC,c
Query recommended minumum GPS/transit message, where c is the optional output
port.
$GPRMC
The return message is in the form:
$GPRMC,m1,c2,m3,c4,m5,c6,f7,f8,d9,f10,c11*cc <enter>
Table 3.6 outlines the response structure.
Typical Response:
$GPRMC,213357.20,A,3722.410857,N,12159.773686,W,000.3,102.4,290498,15.4,
W*43 <enter>
Table 6.110: RMC Message Structure
Parameter Description Range
m1 UTC time of the position fix (hhmmss.ss) 000000.00 - 235959.90
c2 Status A = Data Valid
V = Navigation Receiver
Warning
m3 Latitude (ddmm.mmmmmm) 0000.000000 -
8959.999999
c4 Latitude direction N = North
S = South
m5 Longitude (dddmm.mmmmmm) 00000.000000 -
17959.999999
c6 Longitude direction E = East
W = West
f7 Speed over ground, knots 000.0 - 999.9
f8 Course Over Ground, degrees True 000.0 - 359.9
d9 date, ddmmyy 010100 - 311299
f10 Magnetic Variation, degrees 0.0 - 99.9
c11 Direction of Variation
Easterly variation (E) subtracts from True course.
Westerly variation (W) adds to True course
E = East
W = West
*cc Hexadecimal checksum