Accubar SDI-12 Barometric Pressure Sensor Operations & Maintenance Manual Rev-B 30 Nov 2017
pg. 28
Command Description Command Syntax
(command underlined)
ACCUBAR
®
response (underlined)
"a" represents the single-character address
M6
Request Temperature
and Pressure
Measurement
aM6!
aD0!
attt4
ttt is the time in seconds until the measurement
is ready and 4 is the number of values that can
be collected
a
service request
atupv
where t is the temperature, u is the temperature
units, p is the pressure, and v is the pressure
units. Use the XUT command to set the
temperature units and the XUP command to set
the pressure units.
M7
Request factory
calibration Pressure
and Temperature
Measurement
aM7!
aD0!
attt2
ttt is the time in seconds until the measurement
is ready and 2 is the number of values that can
be collected
a
service request
apt
where p is the pressure in mB and t is the
temperature in degrees Celsius.
MC
Request Default
Pressure
Measurement with
CRC-16
aMC!
aD0!
attt2
ttt is the time in seconds until the measurement
is ready, 2 is the number of values that can be
collected
a
service request
axuC
where x is the signed pressure value, u is the
signed indicator of the units, and C is the 3
character CRC. The units are set by the XUP
command.
MC1
Request Pressure
Measurement in mB
with CRC-16
aMC1!
aD0!
attt1
ttt is the time in seconds until the measurement
is ready, 1 is the number of values that can be
collected.
a
service request
apC
where p is the signed pressure value in mB and C
is the 3 character CRC
