Accubar SDI-12 Barometric Pressure Sensor Operations & Maintenance Manual Rev-B 30 Nov 2017
pg. 22
5.
Command Reference
This chapter documents the commands supported by the ACCUBAR. The commands are listed in alphabetical
order within a section.
5.1 Accubar Basic SDI-12 Commands
Command Description
Command Syntax
(command underlined)
ACCUBAR
®
response (underlined)
"a" represents the single-character address
Acknowledge active
a!
a
?
Request Address
?!
Also see X? command.
a
indicating that the current address is a.
Note
: ACCUBAR
®
should be the only sensor
on the SDI-12 bus when this command is
given, otherwise there will be a
communications collision when all units
respond.
Ab
Set SDI-12 address
aAb!
b new SDI-12 address
Example: 5A9!
(set address 5 to address 9,
the address was previously set
to 5)
b
indicating that the new address is b.
C
Request Default
Concurrent Pressure
Measurement
aC!
aD0!
attt02
ttt is the time in seconds until the
measurement is ready, 02 is the number of
values that can be collected
axu
where x is the signed pressure value and u is
the signed indicator of the units. The units
are set by the XUP command.
C1
Request
Concurrent Pressure
Measurement in mB
(factory calibrated value)
aC1!
aD0!
attt01
ttt is the time in seconds until the
measurement is ready, 01 is the number of
values that can be collected.
ap
where p is the signed pressure value in mB
