Gill Instruments Ltd
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MaxiMet
Page 71
Issue 3
Doc. No. 1957-PS-021
May 2018
Latitude:
Degrees (positive values are N, negative are S)
Longitude:
Degrees (positive values are E, negative are W)
Date:
Years-Months-Days
Time:
Hours:Minutes:Seconds (h:min:s)
Status
4 Digit Sensor Status Code (e.g. 0000 for a no-fault condition)
6.4.2 SDI-12 Commands
Note:
Unavailable measurements shall be "padded", e.g.: +999.99
?!
Returns unit address (default is 0)
a
Current unit address letter (factory default is 0, range is 0 to 9)
b
New address letter, range 0 to 9
aAb!
Change unit address from a to b (see above)
aM!
Address, Relative Wind Direction, Relative Wind Speed, Corrected Wind Direction, Corrected Wind
Speed (GPS option units only), Status
aM1!
Address, Temperature, Relative Humidity, Dewpoint, Pressure, Status, Wind Chill, Heat Index, Air
Density, Wet Bulb Temperature
aM2!
Address, Relative Wind Direction, Relative Wind Speed, Status
aM3!
Address, Precipitation Intensity (Rain), Total Precipitation (Rain), Status
aM4!
Address, Solar Radiation, Sunshine Hours, X Tilt, Y Tilt, Z Orientation, Status
aM5!
Address, signed Latitude integer part, signed Latitude fractional part, signed Longitude integer
part, signed Longitude fractional part, Height Above Mean Sea Level, Status
aM6!
Address, Year, Month, Day, Hour, Minute, Second, Status
aM7!
Address, Sunrise Time, Solar Noon Time, Sunset Time, Position of the Sun (Azimuth), Position of
the Sun (Elevation), Twilight (Civil), Twilight (Nautical), Twilight (Astronomical), Status
aD0!
Request a line of the above data
Command Description
Response
Example
?!
Unit address
a<CR><LF>
0<CR><LF>
aAb!
Change the unit address
a = 0, the default
b = the new address
b<CR><LF>
1<CR><LF>
aI!
Unit identification
013GillInst
<serial number><CR><LF>
013GillInst 00014490002<CR><LF>
aM!
Address, Relative Wind
Direction, Relative Wind
Speed, Corrected Wind
Direction, Corrected
Wind Speed (GPS option
unit only), Status
atttn<CR><LF>
a is unit identifier
ttt is time in seconds
n is number of data values
Measurement command to retrieve a
reading of the maximum time the
MaxiMet will take to complete a
measurement, have data ready and
the number of data values.
00035<CR><LF>
0 is unit identifier
003 is 3s measurement
5 is the number of data readings
(Direction, Speed, Corrected
Direction and Corrected Speed)
aD0!
Retrieve a line of the
above data.
<address><relative wind
direction><relative wind
speed><corrected wind
direction><corrected wind
speed><status><CR><LF>
0+220+000.01+218+999.99
+0000<CR><LF>
