Vaisala WXT520, Руководство пользователя

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User’s Guide ______________________________________________________________________
90 __________________________________________________________________ M210906EN-C
Example 6:
Start a composite measurement and request the data. The configuration
of the parameter set is such that 20 parameters are available. Thus Start
concurrent measurement command
aC shall be used. Due to the 75-
character limit in response message, aD0 returns only 14 parameters.
The remaining parameters are retrieved with aD1 .
0C! 000520<cr><lf> (measurement ready in 5 seconds and 20
parameters available, for aC command device address not sent as a sign
of a completed measurement))
0D0! 0+069+079+084+0.1+0.6+1.1+21.1+21.7+32.0+1000.3+0.02
+20+0.0+0.0<cr><lf>
0D1! 0+0+0.0+1.3+0.0+0+77.1<cr><lf>
Continuous Measurement (aR)
The device can be configured so that all the parameters can be requested
instantly with the command
aR instead of the two phase request
procedure of commands aM , aMC , aC , aCC + aD . In this case the
obtained parameter values are those from the latest internal updating
(for setting of update intervals, see
Chapter 8, Sensor and Data Message
Settings, on page 107 ).
NOTE
For using Continuous measurement commands for all WXT520
parameters (wind, PTU, precipitation, and supervisor) the respective
protocol must be selected (
aXU,M=R ).
The M=S selection requires use of aM , aMC , aC , aCC + aD
commands, only the precipitation data can be retrieved continuously
(using
aR3 command).