Message 3 of 7. Generally, you need to call the Initialize VI only once at the beginning of an application. Message 4 of 7. Many instrument drivers have a VI Tree VI you can use to view the entire instrument driver hierarchy. Instrument drivers simplify instrument control and reduce test program development time by eliminating the need to learn the programming protocol for each instrument.
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The Utility VIs- perform a variety of operations that are auxiliary to the most often used instrument driver VIs. Additionally, labvies can perform any necessary actions to place the instrument in its default power on state or in another specific state. The best way is to open the sub-vi which appears to be what you want to do and run it. Enabling autozero optimizes the instrument for accuracy, while disabling optimizes for speed. Many instrument drivers have a VI Tree VI you can use to view the entire instrument driver hierarchy.
After the instrument has been configured, the Read VI is used to read multiple points. The following figure shows this palette and some of the VIs and subpalettes that are shipped with it. Feel free to write us at les. Finally, the Simple Error Handler is called which labbiew whether an error occurred. You can create instrument control applications and systems by programmatically linking instrument driver VIs on the block diagram. Most instrument drivers have menu palettes that include the following components.
How to Use an Instrument Driver in LabVIEW Tutorial – National Instruments
Examples include VIs for reading a measured value or waveform and VIs for downloading waveforms or digital patterns to lahview source instrument. Message 7 of 7. Instrument Driver Organization Once an instrument driver has been downloaded, the instrument driver VIs will be located on the Instrument Drivers palette.
The Utility VIs might also include other custom instrument driver VIs that perform operations such as calibration or storage and recall of setups.
Message 4 of 7. I just downloaded the file again and followed the steps I described earlier. The Action VIs – initiate or terminate test and measurement operations, such as arming the trigger system or generating labvieww stimulus.
Once the measurement is complete, the Close VI is called which performs an instrument error query and terminates the software connection to the instrument. Don’t be afraid of experimenting. It 43401a be extremely useful to show how to modify portions of instrument drivers for other use. Look at what you are measuring and see if it is useful. You also can use the Instrument Driver Finder to open example programs covering lagview from analysis and presentation to using your instrument driver.
Message 5 of 7. Each routine corresponds to a programmatic operation such as configuring, reading from, writing to, and triggering the instrument.
How to Use an Instrument Driver in LabVIEW Tutorial
They also have a CVI driver that can be converted. In this example, serial communication is used.
The native driver has help for each of the instrument functons if laabview use the F1 help mechanism. I hope this helps! Back to Top 2. From laabview block diagram you can see that the instrument is first initialized with the Serial Configuration and VISA resource name specified on the front panel.