The aD0! 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 in one response string.
aD0!| Name | Description |
|---|---|
| a | Single-digit WMT700 address that corresponds to the first character of the address value |
| D0 | Send data command |
| ! | Terminates the command |