Operation
MetPak Base Station User Manual
Last Change
©
Gill Instruments Ltd
22 April, 2013
Page 49
SDI-12 Commands with CRC
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), Pressure (Hecto Pascals/millibars),
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.
SDI-12 Command Details
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>
aM!
Wind Direction/Speed
(direction in Degrees,
speed in Metres/Sec ),
Temperature (degrees-
C), Pressure (Hecto
Pascals/millibars),
Humidity (%) and a 2
digit Status Code
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 MetPak 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.
5 is the number of data
readings (Direction, Speed,
Temperature, Pressure and
Humidity).
0D0!
Retrieve a line of the
above data.
a<dir><mag><temp><pressure>
<humidity><CR><LF>
0+220+000.01+021.6+
1013.0+041.9<CR><LF>
aM1!
Wind Direction/Speed
(direction in Degrees,
speed in Metres/Sec ),
Temperature (degrees
C), Pressure (Hecto
Pascals/millibars) and
Dewpoint (degrees C).
atttn<CR><LF>
00055<CR><LF>
0D0!
Retrieve a line of the
above data.
a<dir><mag><temp><pressure>
<dewpoint><CR><LF
0+357+000.03+021.6+
1013.0+008.0<CR><LF>