Vaisala WXT520 Guide de l'utilisateur télécharger pdf (Page 92)

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).

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Vaisala WXT520 Guide de l'utilisateur Page 92