Gill Instruments Ltd
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MaxiMet
Page 45
Issue 1
Doc. No. 1957-PS-000x
March 2015
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 and Status (GMX600).
aM2!
Address, Relative Wind Direction, Relative Wind Speed and Status.
aM3!
Address, Precipitation Intensity (Rain), Total precipitation (Rain), Status (GMX600).
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.
00055<CR><LF>
0 is unit identifier.
005 is 5 sec. measurement.
5 is the number of data readings
(Direction, Speed, Corrected
Direction and Corrected Speed).
0D0!
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>
aM1!
Address, Temperature,
Relative Humidity,
Dewpoint, Pressure and
Status
atttn<CR><LF>
00014<CR><LF>
0D0!
Retrieve a line of the
above data.
<address><temperature>
<relative humidity><dewpoint>
<pressure><status> CR><LF
0+024.3+036+008.4
+1024.9+0000<CR><LF>
aM2!
Address, Relative Wind
Direction, Relative Wind
Speed and Status.
atttn<CR><LF>
00053<CR><LF>
0D0!
Retrieve a line of the
above data.
a<dir><mag><status><CR><LF>
0+029+000.01+0000<CR><LF>
aM3!
Address, Precipitation
Intensity, Total
precipitation, Status
atttn<CR><LF>
00053<CR><LF>
0D0!
Retrieve a line of the
above data.
<address><precipitation
intensity><total precipitation><status>
CR><LF
0+0002.1+123.1+0000<CR><LF
>
