4. Setup and Operation
Introduction
This section will familiarize you with the steps and commands needed to alter the setup of the
ACCUBUBBLE. The ACCUBUBBLE System is set to address 0 (the factory default) and the
output is set to units of feet of water.
To issue commands to the ACCUBUBBLE via SDI-12, you will need to connect it to a data
recorder, such as a Sutron 8200, 8210, or 8400 which is capable of issuing standard and extended
SDI-12 commands. Follow the instructions in Sections 2 and 3 in order to make these connections.
Nomenclature
All commands have three components: the
device address
, the
command body
, and the
command
termination
.
The
device address
is a single character and is the first character of a command. In the examples
that follow, it is usually the number 0 (the default address as shipped from the factory).
The
command body
and the responses are shown as a combination of upper and lower case letters.
The upper case letters are the fixed portions of the command and the lower case letters are the
variables or values. In the specific examples, you will see that the lower case letters are replaced
with actual numbers.
Setting the Address
If you are using the ACCUBUBBLE connected with other SDI-12 devices, you will need to change
the ACCUBUBBLE address. Otherwise, skip this section. The address simply lets multiple
devices share the same wiring. When the data recorder needs data from a particular sensor, it
requests data using an address. Only the device with the matching address will reply.
The default SDI-12 address is 0.
Using A command to Set the Address
In order to set the address by SDI-12 command, the DIP switch address must be set to 0 (Switches
1,2,3,4 OFF). This is the factory setting for the switches. Also, no other SDI-12 devices connected
to the system should be set to address 0 or to the desired ACCUBUBBLE address. Hint: If you do
not know the address of a particular ACCUBUBBLE, use the unknown address command to have
the ACCUBUBBLE identify itself.
NOTE: There can only be one ACCUBUBBLE connected in order for the unknown address
command to work. The syntax for the unknown address command or address query command is:
?!
The SDI-12 command for setting the ACCUBUBBLE's address is the XAD command
0XADnAn!
where 0 is the current address of the device, n is the new SDI-12 address
and n is the same address repeated (0 to 9, A to Z, a to z).
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