Vaisala WXT510 - Manual (Page 76)

User’s Guide ______________________________________________________________________
74 __________________________________________________________________ M210470EN-D
Send Data Command (aD)
This command is used to request the measured data from the device. See
Examples of aM, aC and aD Commands on page 75 .
Command format: aDx!
The response:
a+<data fields><cr><lf>
NOTE Start measurement command tells the number of parameters available.
However, the number of the parameters that can be included in a single
message depends on the number of characters in the data fields. If all
the parameters are not retrieved in a single response message, repeat
the Send data commands until all the data is obtained.
where
a
= Device address
D = Send data command
x = The order of consecutive Send data commands.
Always, the first Send data command should be
addressed with x=0. If all the parameters are not
retrieved, the next Send data command is sent with
x=1 and so on. The maximum value for x is 9. See
Examples of aM, aC and aD Commands on page 75 .
! = Command terminator
where
a
= Device address
<data
fields> = The measured parameters in selected units, separated
with '+' marks (or - marks in case of negative
parameter values).
<cr><lf> = Response terminator
NOTE aD0 command can also be used to break the measurement in progress
started with commands aM, aMC, aC or aCC.