Gill Instruments Ltd
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MetPak/MetPak RG and MetPak Pro Base Stations
Page | 68
Issue 1
Doc. No. 1723-PS-0023
October 2018
6.4.3.
SDI-12 Commands with CRC
Note: Unavailable measurements shall be "padded", e.g.: +999.99.
aMC!
Wind Direction/Speed (direction in Degrees, speed in Metres/Sec ), Temperature
(degrees C), Pressure (Hecto Pascals/millibars), Humidity (%) and CRC.
aMC1!
Wind Direction/Speed (direction in Degrees, speed in Metres/Sec ), Temperature
(degrees C), Pressure (Hecto Pascals/millibars), Dewpoint (degrees C) and CRC.
aMC2!
Wind Direction/Speed (direction in Degrees, speed in Metres/Sec ), a 2 digit Status
Code and CRC.
aMC3!
Temperature (degrees C), Humidity (%), Dewpoint (degrees C) and CRC.
aMC4!
Pressure (Hecto Pascals/millibars) and CRC.
aMC5!
PRT, Analogue Input 1, Analogue input 2, Digital Input 1 and CRC.
aMC6!
PRT and CRC.
aMC7!
Analogue Input 1, Analogue Input 2 and CRC.
aMC8!
Digital Input 1 and CRC.
aMC9!
Power Supply Voltage (Volts) and CRC.
aD0!
Request a line of the above data.
Command
Description
Response
Example
aMC!
Wind Direction/Speed
(direction in Degrees,
speed in Metres/Sec ),
Temperature (degrees-
C), Pressure (Hecto
Pascals/millibars)
Humidity (%) and CRC.
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 Base
Station 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.
6 is the number of data readings
(Direction, Speed, Temperature,
Pressure, Humidity and CRC).
0D0!
Retrieve a line of the
above data.
a<dir><mag><temp><pressure
><humidity><CRC><CR><LF>
0+139+000.06+022.2+1017.8
+042.7BIQ<CR><LF>
aMC1!
Wind Direction/Speed
(direction in Degrees,
speed in Metres/Sec ),
Temperature (degrees
C), Pressure (Hecto
Pascals/millibars),
Dewpoint (degrees C)
and CRC.
atttn<CR><LF>
00055<CR><LF>
0D0!
Retrieve a line of the
above data.
a<dir><mag><temp><pressure
><dewpoint><CRC><CR><LF
0+140+000.06+022.2+1017.7
+009.0D{Z<CR><LF>
aMC2!
Wind Direction/Speed
(direction in Degrees,
speed in Metres/Sec ),
a 2 digit Status Code
and CRC.
atttn<CR><LF>
00053<CR><LF>
0D0!
Retrieve a line of the
above data.
a<dir><mag><status><CRC
><CR><LF>
0+098+000.04+00@sh<CR>LF
