Wiring DAQ Assistant Parameters Does Not Affect Values in Configuration Window

Issue Details

• In LabVIEW, when I wire values to the rate and number of samples inputs on the DAQ Assistant Express VI, the Samples to Read and Rate (Hz) values in the configuration pop-up don't update to reflect the change. Why is this?
• There are two ways to configure parameters in the DAQ Assistant VI: using the pop-up window or wiring values on the Block Diagram. Which values are actually being used for the acquisition task?

Solution

It is expected that values shown in the DAQ Assistant's configuration window do not update to reflect the values wired on the Block Diagram.

Parameters defined in the configuration window, such as Samples to Read and Rate (Hz), are used as initial conditions. Any values wired to parameters on the Block Diagram overwrite the initial conditions in the configuration window. 

If you do not overwrite the parameters by wiring values on the Block Diagram, the values defined in the configuration window will persist for the entire acquisition task.