Bringing the Benefits of Real-Time Data Collection to the World
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5. Command Reference
This chapter documents the commands supported by the ACCUBAR. The commands are listed in alphabetical order
within a section.
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
?!
New in version 1.2 of SDI-12 spec.
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
(Version 1.9
and higher)
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.
Note:
if the DIP switches are set to a
non-zero address then upon power-up
the address will be the dip-switch
address.
C
Request
Default
Concurrent
Pressure
Measurement
(Version 2.0
and higher)
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)
(Version 2.0
and higher)
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
