34
⚫
SDI-12 commands
Address Assign
Having used the previous Address Query command to find out the address
of the single connected WET150, the Address Assign command can be
sent specifically for that addressed sensor to change its address. At this
stage it is best if just one WET150 connected to the GP2, particularly if you
are configuring brand new sensors which may all be configured respond on
the same address.
In this example we will change the sensor address from 0 to d.
Using the DeltaLINK transparent mode terminal window:
Type in command
box
0Ad
Press the <ENTER> key or click on
the Send button
Terminal window
shows
0Ad!d
The visible terminal window character string “0Ad!d” can be broken down
and explained as:
Commands from the GP2 logger/controller:
Character
Meaning
0
The SDI-12 address of the sensor you wish to
communicate with
A
The SDI-12 command character for “Address Assign”
d
The new SDI-12 address should change to
!
The SDI-12 end-of-command character (automatically
added in transparent mode)
Reply from the WET150 sensor:
Character
Meaning
d
The response back from the WET150, in this example
confirming it is now set to address character
d
.