Vaisala WMT700 - Manual (Page 125)

Chapter 5 _________________________________________________________________ Operation
Status Flags
Table 39 below lists the status flags included in the data message
when the status code item \er has been added to the message.
Each bit corresponds to a specific status.
Status flags are coded in decimal number format. To extract each
bit from the status code, the decimal number must be converted to
binary format.
Table 39 Status Flags
Bit Description
0 Temperature sensor 1 failure
1 Temperature sensor 2 failure
2 Temperature sensor 3 failure
3 Heater failure. Incorrect heater element resistance
4 Too high (Vh > 40 V or Vi > 40 V) supply voltage
5 Too low (Vh < 20 V or Vi < 10 V) supply voltage
6 Wind speed exceeds operating limits
7 Sonic temperature exceeds operating limits
8 Wind measurement fails over 80% of the averaging time.
Reported wind is still correct
9 Not used
10 Blocked sensor. Reported wind is still correct
Example:
The message contains status flag value 130:
130 in decimal format is 128 + 2  00010000010 Binary
| |_________ 2
|_______________ 128
000 1000 0010
| | | | | | | | | | |_Temperature sensor 1 OK
| | | | | | | | | |__Temperature sensor 2 failure ON
| | | | | | | | |___Temperature sensor 3 OK
| | | | | | | |____Heater OK
| | | | | | |______Supply voltage not too high
| | | | | |_______Supply voltage not too low
| | | | |________Wind speed in operation limit
| | | |_________Sonic temperature exceeds operating limit
| | |___________Wind measurement OK
| |____________Not used
|_____________No sensors blocked
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