Gill Instruments Ltd
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MaxiMet Page 89 Issue 3
Doc. No. 1957-PS-021 May 2018
6.6.2 GMX101 NMEA Output String
$WIXDR, Z,0000,W,SOLAR*01<CR><LF>
Where: $WIXDR Wind Instrument Transducer
Z Type of Sensor (Solar)
0000 Solar Radiation reading in W/M
2
W Solar Units of Measure (Total W/M
2
)
SOLAR Name of Solar Sensor
*01 Hex Checksum
<CR> is a Carriage Return Character (ASCII hex value d)
<LF> is a Line Feed Character (ASCII hex value a)
Checksum, the 2 digit Hex Checksum sum figure, is calculated from the Exclusive OR of the bytes between
(and not including) the $ and * characters.
Immediately followed by:
$PGILT,A,+XX,D,+YY,D,+Z,TILT*HH<CR><LF>
Where: $P Start of sentence and proprietary sentence identifier
GIL Gill Instruments recognised NMEA manufacturer mnemonic
T Indicates TILT information
A Type of Sensor (Angular Displacement)
+XX +X Tilt indicates unit is tipping towards east "XX" degrees
Or -XX -X Tilt indicates unit is tipping towards west "XX" degrees
D Units (Degrees)
+YY +Y Tilt indicates unit is tipping towards north "YY" degrees
Or -YY -Y Tilt indicates unit is tipping towards south "YY" degrees
D Units (Degrees)
+Z Z-Orientation "+1" shall be reported if the unit is installed upright, or "-1" if
facing downwards
TILT Name of the Sensor
*HH Checksum
<CR><LF> End of message termination
Example GMX101 NMEA data string, repeated every second (1Hz output):
$WIXDR,Z,0002,W,SOLAR*1C
$PGILT,A,+00,D,+00,D,+1,TILT*34
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