Solution
Error -200284 indicates that the DAQmx task is trying to read samples that have not been acquired yet. To stop this error you can set the timeout to
-1 but this will not display a frequency of zero only the most recent value.
To display a value of zero for frequency you must allow the system to timeout then manually enter a value of zero into the frequency output and remove the error.
Counter 0Hz. vi shows how to accomplish this. The While Loop that implements this solution is shown below.
![](/servlet/rtaImage?eid=ka03q000000lR77&feoid=00N0Z00000HEWRt&refid=0EM0Z000000WCos)
If an error occurs, the case structure will pass a frequency value of zero to the
Frequency indicator.