Vaisala WMT700 - Manual (Page 174)

User's Guide ______________________________________________________________________
aD0! — Send Data
This command fetches instant data from WMT700. aD0! must be
preceded by a C!, M!, or V! command. WMT700 responds by
sending measurement data (after C! or M!) or verification data
(after V!).
In a SDI-12 system compliant with the standard, if the expected
number of measurements is not returned in response to an aD0!
command, a data recorder issues D1!, D2!, and so on, until all
measurement values are received. The expected number of
measurements is included in the message that WMT700 sends in
response to an aC!, aM! or aV! command. Multiple data requests
are not needed with WMT700, since all return values fit easily
into one response string.
aD0!
where
a = Single-digit WMT700 address that corresponds to the
first character of the address value
D0 = Send data command
! = Terminates the command
For a description of the data messages, see section SDI-12 Data
Messages on page 176.
aI! — Send Identification
This command queries WMT700 for its SDI-12 compatibility
level, model number, and firmware version number.
aI!
where
a = Single-digit WMT700 address that corresponds to the
first character of the address value
I = Send identification command
! = Terminates the command
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