Vaisala WINDCAP WS425 Betriebsanweisung PDF herunterladen (Seite 154)

User's Guide ______________________________________________________________________

WS425 F/G ASOS Data Message

WMT700 responds to the WA command with a data message

described in Table 45 below.

Table 45 WS425 F/G ASOS Data Message

Byte

Description

Start of text

Sensor ID

Command identifier

Sensor status:

P = Pass

F = Fail

H = Heater failure

For further information, refer to notes 1 and 2.

5-7

Averaged wind direction (degrees)

8-10

Wind direction (degrees) @ peak wind speed

11-12

Averaging time for wind speed and direction

13-14

Averaging time for peak wind speed and direction (seconds)

15-19

Averaged wind speed

20-24

Peak wind speed since last WA command

Wind speed unit:

M = Miles per hour

K = Knots

L = Kilometers per hour

T = Meters per second

26-27

Signal quality. For further information, refer to note 3.

28-29

Hex checksum. For further information, refer to note 4.

End of text

Carriage return

Line feed

Notes:

1. The sensor status (byte 4) indicates the following:

- P (Pass) indicates that all diagnostic tests have passed

and WMT700 is functioning normally.

- F (Fail) indicates that one or more of the diagnostic tests

have failed. You can then request diagnostics and

extended tests (WS) to further isolate the problem.

- H (Heater failure) indicates that the wind reading is valid

but one or more built-in heater diagnostic tests have

failed.

2. When the status byte is F, the wind direction fields are set to

999 and the wind speed fields are set to 999.9 in the

applicable sensor response messages.

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