ashtech DG14, Reference Manual

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NMEA Commands 237
NMEA Commands
$PASHQ,GLL,[c1]
This command queries the GLL position message, where c1 is the optional port
designator for the output of the response. If a port is not specified, the receiver
sends the response to the current port.
$GPGLL
This message is not output unless position is computed. The GLL message contains
a 2-D position (latitude/longitude only) and time of position fix. The DG16 can be
set to output the GLL message at regular intervals by using the command
$PASHS,NME. The message is output in the format:
$GPGLL,m1,c2,m3,c4,m5,c6,d7*hh
Table 8.9 outlines the message format.
Typical GLL message:
$GPGLL,3722.36223,N,12159.82741,W,170003.00,A,A*7F
Table 8.9. $GPGLL Message Format
Parameter Description Range
m1 Latitude of the position fix (ddmm.mmmmm) 0° to 90°
c2 Latitude sector N—North
S—South
m3 Longitude of the position fix (dddmm.mmmmm) 0° to 180°
c4 Longitude sector E—East
W—West
m5 UTC time (hhmmss.ss) of the position fix 000000.00 to
235959.90
c6 Status of the position fix (always A):
• A—Valid
• V—Invalid
A, V
d7 Positioning system mode indicator
• A—Autonomous mode
• D—Differential mode
• E—Estimated (dead reckoning) mode
• M—Manual input mode
• S—Simulator mode
• N—Data not valid
A, D, E, M, S, or N
hh Checksum 2-character hex