User's Guide _______________________________________________________________________
44 ___________________________________________________________________ M210470EN-B
Send identification command (aI)
This command is used to the query device for the SDI-12
compatibility level, model number, and firmware version and serial
number.
Command format:
aI!
where
a
=
Device address (default = 0)
I
=
Send identification command
!
=
Command terminator
The response:
allccccccccmmmmmmvvvxxx . . . xxx<cr><lf>
where
a
=
Device address (default = 0)
ll
=
The SDI-12 version number, indicating SDI-12 version
compatibility; for example, version 1.3 is encoded as 13
cccccccc
=
8-character vendor identification Vaisala_
mmmmmm
=
6 characters specifying the sensor model number
vvv
=
3 characters specifying the firmware version 1.0
xxxxxxxx
=
8 character serial number
<cr><lf>
=
Response terminator
Example:
0I!
0 1 3 VAISALA_WXT510 103 Y2630000 <cr><lf>
Address query command (?)
This command is used to query the address of the device on the bus.
If more than one sensor is connected to the bus, they will all respond,
causing a bus collision.
Command format:
?!
