Vaisala WMT700 - Manual (Page 135)

Chapter 5 _________________________________________________________________ Operation
Example:
$03.22,75.29,03.38,03.07,22.13,0,A4<cr><lf>
Interpretation of the example message:
- Wind speed, average: 3.22 m/s
- Wind direction, average: 75.29°
- Wind speed, maximum: 3.38 m/s
- Wind speed, minimum: 3.07 m/s
- Sonic temperature: 22.13 °C
- Status code: 0
- Checksum: A4
ROSA - MES12 Data Message
The MES12 Data Message 12 is used in the ROSA Surface
Analyzer for Roads and Runways system. You can use this data
message when WMT700 is connected to the Vaisala ROSA
system.
This message contains sensor identifications (sids), corresponding
data items, and the synchronization characters SOH, STX, and
ETX. The lines are ended by CR and LF characters.
For more information, see Chapter 5, Operation, section Data
Messages, in the Surface Analyzer for Roads and Runways
ROSA, DM32 Version User's Guide (M210242EN).
Missing Readings
If WMT700 is not able to measure the wind, it indicates a missing
reading in the output. Most common reasons for measurement
problems are ice, birds, or other foreign objects on the line of
measurement.
When the WMT700 profile is used, WMT700 indicates missing
readings by showing 999 in the data messages.
Example:
When the WMT700 Data Message 22 is polled, missing readings
are indicated with the following response:
$999.00,999.00<cr><lf>
VAISALA _______________________________________________________________________ 133