Wind measurement failure. WMT700 is sending irregular
data values. |
The installation site is causing measurement problems. |
Check that the installation site matches the requirements listed in
Placing WMT700. |
Snow, ice, a bird, or some other object is blocking the measurement
path between the ultrasonic transducers. |
Remove the blockage and check that the wind transducers are not
damaged. If the blockage is ice or snow, it melts after some time if you use a heated
version of WMT700. Duration of the blockage depends on the severity of the weather
event. If birds are causing the blockage, consider installing a bird cage. See Bird cage. |
Reported wind direction is not correct. |
WMT700 is misaligned, which causes an offset error. |
Realign WMT700 according to Aligning WMT700. |
Wind direction indication acts erratically. |
Orientation of the sensor does not match the
wndOrientation parameter value. |
Set the wndOrientation parameter value according
to the actual orientation of the sensor. See Configuration parameter descriptions. |
There is no response when you try to switch to configuration mode
with the OPEN command. |
The WMT700 settings are unknown or they have been accidentally
changed. |
Reset the serial communication settings to default values. See Restoring serial port settings. |
WMT700 does not respond to any commands. |
The communication profile is not correct. |
Configure the communication profile to match the host communication profile. See
Changing communication profile. |
The wiring might be incorrect. |
Check the wiring, see Wiring. |
Connection works but data messages are not available. |
You have mistyped the command. |
Use the ERRORS command to fetch the
error messages from WMT700. See ERRORS — get error codes and counts. |
Data messages are not in the expected format. |
The selected data message is not correct. |
If you use automatic messages: check the selected data message with
the G command. If necessary, set a new value for the
autoSend parameter. If you use polling: check that
you are using the correct data message number in the polling command, see Table 1. |
Some items are missing from the data messages. |
The configured data message does not contain all the required
items. |
Define the data message again with the required items. See Parameter handling commands. |
Configuration commands do not work. |
WMT700 is in measurement mode. |
Switch from measurement mode to configuration mode. See Communicating with terminal software. |
WMT700 sends an error message as a response to a command. |
For probable causes, see Error and event messages. |
For remedies, see Error and event messages. |
No signal is present on analog outputs. |
Analog output has been disabled. |
Enable analog output with the aout1_mode and aout2_mode parameters.
See Configuration parameter descriptions. |
Automatic data messages are not received although parameters are
correct. |
WMT700 is not in continuous measurement mode. |
Initiate continuous measurement with the START command. See START — start continuous measurement. |
Data from WMT700 is temporarily lost. |
The data logger and wind sensor are not in the same operating mode
(polling or automatic transmission mode). |
Make sure that the data logger and wind sensor are both in either
polling or automatic transmission mode. |
Data messages are not received. |
Baud rates of the data logger and wind sensor do not match. |
Change the baud rate so that it is the same in the data logger and
wind sensor. |
Parameter does not change after typing the S command. |
The parameter requires reset before it becomes valid. |
Check Configuration parameter descriptions if you must reset before the parameter is changed. |
Inconsistent serial communication or missing data. |
Pin contacts of the connector have become oxidized or the connector
is not firmly attached. |
Change the WMT700 cable. |
Retrofit installation of WMT700 is not possible. |
You do not have the correct mounting kit for the retrofit
installation. |
Check that you are using the correct mounting adapter with your
mounting kit. See WMT700 accessories. |
WMT700 does not work properly after retrofit installation. |
Incorrect cables are used in the retrofit installation. |
Check that you have used cables listed in Connection cable prerequisites. If you do not have the correct cables, contact Vaisala technical support. |
Connection to WMT700 is lost. |
The power supply is not sufficient, especially if you are using a
heated version of WMT700. |
Check that the power supply matches the requirements in Powering WMT700. |