Vaisala WMT703 - WMT700 Data Message 24

Chapter 7 ________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 97
WMT700 Data Message 24
WMT700 Data Message 24 reports wind measurement and self-
diagnostics data. The check sum is included in the message. WMT700
calculates the checksum by applying 8-bit XOR for all bytes. The result
is printed as a 2-digit hexadecimal value. The message is in the format
described below:
\ss$\ws,\wd,\wp,\wm,\Ts,\vh,\vi,\ta,\er,\se\sp\cr\lf
where
\ss = Checksum calculation start point, not shown in the
message
$ = Fixed text
\ws = Wind speed, average
\wd = Wind direction, average
\wp = Wind speed, peak
\wm = Wind speed maximum
\Ts = Sonic temperature
\vh = Heater voltage
\vi = Supply voltage
\ta = Transducer temperature
\er = Status code. The code is a decimal number. Each bit
corresponds to a status flag. For a list of the bits, see
section Status Flags on page 86.
\se = Checksum calculation end point, not shown in the
message
\sp = Print checksum
\cr = CR (carriage return)
\lf = LF (line feed)
Example:
$03.45,76.03,03.58,03.37,21.97,23.8,23.6,23.8,0,D4<cr><lf>
Interpretation of the example message:
- Wind speed, average: 3.45 m/s
- Wind direction, average: 76.03 °
- Wind speed, peak: 3.58 m/s
- Wind speed, maximum: 3.37 m/s
- Sonic temperature: 21.97 °C
- Heater voltage: 23.8 V
- Supply voltage: 23.6 V