Vaisala WINDCAP WS425 Guia do Utilizador descarregar pdf (Página 46)

USER'S GUIDE____________________________________________________________________

46 __________________________________________________________________ M210361EN-E

WAT11 Message

The fixed length format of the WAT11 message is defined as follows:

where

<stx> = Start of text character (1 digit)

<id> = Sensor identification character, for example, A

(one digit).

<spd> = Wind speed (in m/s) multiplied by 10, for example,

045 is 4.5 m/s (three digits).

<dir> = Wind direction with two octal numbers for 6-bit

binary data, for example, 45

= 37

corresponds to

37/64*360 = 208 degrees

The WAT11 polling command is defined as follows:

where

<esc> = Escape character ASCII 27H

<id> = Sensor ID, for example, A.

Missing Readings

The WA

T11 message reports missing data as slashes (/////).

NOTE

The sensor has a 20 ms timeout in receiving characters. Therefore,

polling strings should be transmitted by a programmable device, not as a

user command via terminal sessions.

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Vaisala WINDCAP WS425 Guia do Utilizador Página 46