Vaisala WXT536, Руководство пользователя

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User’s Guide ______________________________________________________________________
108 _________________________________________________________________ M211840EN-C
The response:
a+<data fields><cr><lf>
Examples of aM, aC and aD
Commands
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 .
NOTE
In SDI-12 v1.3 Continuous measurement mode ( aXU,M=R ) the
sensor makes measurements at configurable update intervals. The aD
command following the aM , aMC , aC, or aCC command always
returns the latest updated data. Thus in aXU,M=R mode issuing
consecutive aD commands can result in different data strings if the
value(s) happen to be updated between the commands.
NOTE
The parameter order in messages is as follows:
Wind (M1) : Dn Dm Dx Sn Sm Sx
PTU (M2) : Ta Tp Ua Pa
Rain (M3) : Rc Rd Ri Hc Hd Hi Rp Hp
Supv (M5) : Th Vh Vs Vr Id
Comp (M) : Wind PTU Rain Supv (parameters in above order)
The order of the parameters is fixed, but you can exclude any
parameter from the list when configuring the transmitter.