The user-configurable data messages can contain wind measurement, control character, check sum, and monitoring items. Configure new data messages with the msg1, msg2, msg3, and msg4 parameters. All available items are listed in the following tables.
Item | Description |
---|---|
\ad | Address |
\dm | Wind direction minimum calculated over the averaging period |
\dx | Wind direction maximum calculated over the averaging period |
\gu | Wind gust speed |
\lu | Wind lull speed |
\rg | Signal quality |
\st | Speed of sound |
\Ts | Sonic temperature |
\Tz | 10 s average of sonic temperature |
\va | Validity of the measurement data. The available values are:1 = Valid wind measurement data0 = Unable to measure |
\w1 | Wind direction when the peak speed (\wp) occurred |
\wd | Wind direction, average |
\wm | Wind speed minimum calculated over the averaging period |
\wp | Wind speed maximum calculated over the averaging period |
\ws | Wind speed, average |
\wx | Wind speed average, x component |
\wy | Wind speed average, y component |
Item | Description |
---|---|
\01 | SOH (start of heading) |
\02 | STX (start of text) |
\03 | ETX (end of text) |
\04 | EOT (end of transmission) |
\cr | CR (carriage return) |
\lf | LF (line feed) |
\se | Checksum calculation end point |
\sp | Print checksum |
\ss | Checksum calculation start point |
Item | Description |
---|---|
\er | Status code. The code is a decimal number. Each bit corresponds to a status flag. For a list of the bits, see Status flags |
\fb | 0 = No error 1 = Blocked sensor |
\fh | 0 = No error 1 = Heater failure. Incorrect heater resistance. |
\fs | 0 = No error 1 = Wind speed exceeds operating limits 2 = Sonic temperature exceeds operating limits 3 = Wind speed and sonic temperature exceed operating limits |
\ft | This value indicates temperature sensor failures when converted to
binary format: Bit 0 = Temperature sensor 1 failure Bit 1 = Temperature sensor 2 failure Bit 2 = Temperature sensor 3 failure |
\fv | 0 = No error 1 = Supply voltage (Vh or Vi) too high 2 = Supply voltage (Vh or Vi) too low |
\pa | Average heating power |
\ra | Heater resistance |
\ta | Transducer temperature |
\ti | Internal temperature |
\vh | Heater voltage |
\vi | Supply voltage |
Example
In this example a new data message with
identification number 1 is defined. The items included in the message are average wind
speed, average wind direction, and supply voltage. S
msg1,$\ws,\wd,\vi\cr\lf
When the above message is polled, WMT700
sends the following data if the average wind speed is 5 m/s, the average wind direction is
128 degrees, and the supply voltage is 23.4:
$05.00,128,23.4<CR><LF>
Example
In this example the data message 2 is set to include the following items:
- SOH
- Checksum calculation start point
- Wind speed, average
- Wind direction, average
- Wind gust speed
- Wind lull speed
- Wind direction minimum
- Wind direction maximum
- Wind direction during the peak speed (wp) occurred
- Checksum calculation end point
- EOT
- Print checksum
- CR
- LF
S msg2,\01\ss$\ws,\wd,\gu,\lu,\dm,\dx,\w1\se\04\sp\cr\lf
WMT700 sends the following message that starts with the SOH character which is excluded from the checksum. The checksum ends before the EOT character. The checksum (in this case, D8) is printed after the EOT character.
┌_$02.66,98.21,02.66,02.60,95.68,99.53,99.34_D8<CR><LF>
The non-printable characters are shown above as ┌ ┘and <CR><LF>.