Vaisala WXT510 - Manual (Page 70)

User’s Guide ______________________________________________________________________
68 __________________________________________________________________ M210470EN-D
The response:
a<cr><lf>
Example (device address 0):
?!0<cr><lf>
Acknowledge Active Command (a)
This command is used to ensure that a device is responding to a data
recorder or another SDI-12 device. It asks a device to acknowledge its
presence on the SDI-12 bus.
Command format: a!
The response:
a<cr><lf>
Example:
0!0<cr><lf>
where
a
= Device address (default = 0)
<cr><lf> = Response terminator
where
a
= Device address
! = Command terminator
where
a
= Device address
<cr><lf> = Response terminator