Vaisala WINDCAP WS425 Uživatelská příručka stáhnout pdf (Strana 136)

User's Guide ______________________________________________________________________

Error Indication

WMT700 provides advanced self-diagnostics for monitoring the

status of the wind sensor and the validity of the measurement

data. You can use the diagnostics as follows:

- WMT700 checks the status of the internal operational software

at each reset by verifying the CRC checksum of the software.

The software check is not made periodically; it is only made at

each reset. If the checksum is incorrect, WMT700 does not

start up. If the checksum is correct, WMT700 continues by

calculating the CRC checksum of the parameter memory. In

case the parameter memory is corrupted, the sensor replies

with the text "Parameters crc error" upon startup. In case the

parameter memory checksum is correct, WMT700 replies with

the text "ready" as shown in the example below.

>$WMT700 v<version number>

ready.

- To check the status of the wind sensor, include the status code

item \er in the data message. You need to convert the status

code to a binary number to verify the status. An error code

does not indicate that the wind data is invalid. For more

information, see section Status Flags on page 123.

- To check that the wind data is valid, include the \va item in the

data message. For more information, see section Items for Data

Messages on page 119.

- To check other diagnostics-related data, include the required

items in the data message. For more information, see section

Items for Data Messages on page 119.

NOTE

Only

a power-off self-test exists. See Appendix A, Complete Command

Set for WMT700

, on page 195.

134 __________________________________________________________________ M211095EN-E

1 2 ... 131 132 133 134 135 136 137 138 139 140 141 ... 220 221

Žádné komentáře

Vaisala WINDCAP WS425 Uživatelská příručka Strana 136