Class This class of functions begins or terminates an acquisition. To use your newly created task in a program, call the Run Task function declared in the header file as shown in the following code: If you find one, follow the procedure below to load it into CVI You can load and unload instrument drivers manually using the Instruments Folder in the Library Tree or using the Instrument menu. If you find one, follow the procedure below to load it into CVI. This function performs the following initialization actions: If you want to set an attribute, such as the baud rate of an ASRL session, you could use:. This action must be the first step in all sequences.
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If you make changes directly to the generated files, those changes are lost when you edit the task and regenerate the files.
Class This class of functions provides lower level functions to communicate with the instrument, and change instrument parameters. Each file has the same base file name, which is typically an abbreviation of the actual instrument name.
LabWindows/CVI Instrument Drivers
It is particularly important to use variables of the correct data type in viGetAttribute. On UNIX, run visaconf and double-click any resource to bring up a dialog box for managing the lzbwindows for that resource.
You can load and unload instrumeht drivers manually using the Instruments Folder in the Library Tree or using the Instrument menu. You also must specify the name of the task, the name of the Run Task function to generate, and a Target Directory.
Rate this document Select a Rating 1 – Poor 2 3 4 5 – Excellent. Finding Resources As shown in the previous instrumnet, you can create a session to a resource using the viOpen call. You can double-click the.
LabWindows™/CVI – National Instruments
Class This class of functions configures the instrument by setting acquisition and system configuration parameters. The following figure shows the function tree insgrument for the Agilent A driver. However, in some cases such as ASRL serial resources, you need to set some other parameters such as baud rate, parity, and flow control before proper communication can begin.
The presence of the. Class This class of functions begins or terminates an acquisition. Back to Top 3. Rate this document Select a Rating 1 – Poor 2 3 4 5 – Excellent.
To use an alias in your program, just call viOpen with the alias name instead of the canonical resource name. You can double-click on any of the functions to open that function and edit or run it.
LabWindows/CVI Instrument Drivers – ELCOM, a.s.
How to Use an Instrument Driver in LabWindows/CVI Tutorial
A Word document that describes the functionality of that particular instrument driver is also included when you download an instrument driver. An instrument driver is a set of software routines that control a programmable instrument. Using the above examples, the logical address is a bit value, whereas lbawindows baud rate is a bit value.
Attributes not only describe the state of the device, but also the method of communication with the device. This information is encapsulated inside a generic structure called an attribute. You must arrange the following steps into a sequence. Instrument drivers loaded through the Instruments folder or Instrument menu do not have to imstrument listed in the project, ihstrument you can load or unload them at any time except during program execution.
This action must be the first step in all sequences.