Viewing All the Functions in an Instrument Driver Primary Software: LabVIEW Development Systems>>Full Development SystemPrimary Software Version: 7.1 Primary Software Fixed Version: N/A Secondary Software: Instrument Drivers/IVI
Problem: I want to know if there is a manual with the description of all functions in my instrument driver. If not, is there a file that allows me to view all the icons and terminals of each icon? Solution: Many drivers have a VI called a VI Tree. This VI has all of the driver's VIs in its block diagram. Opening this VI, and the Context Help window (Ctrl+H), is a great way to see what functions are available, read descriptions of the functions, and find out what arguments are required. Though many drivers include a VI Tree, they are not required for any standard. Therefore, it is up to the discretion of the instrument driver developer whether or not to include one. The VI Tree also does not show up in the functions palette by default in versions earlier than LabVIEW 8.0. To open it in LabVIEW, you need to go to File»Open and navigate to ..\LabVIEW\instr.lib. Next, find the VI library that contains the VI Tree. For example, the VI Tree for the HP34401A in LabVIEW 7.0 is located in C:\Program Files\National Instruments\LabVIEW 7.0\instr.lib\hp34401a\hp33401a.llb.The image below illustrates the opening of the VI Tree file for the HP34401A instrument driver in LabVIEW 7.0. In LabVIEW 8.0 and later, the VI Tree will be on the functions palette along with the other instrument driver VIs. You can simply drag it onto a new block diagram, double click to open the VI Tree subVI, and then view the block diagram to see the Tree.
Related Links: KnowledgeBase 28FFK4QO: Now that I Have Downloaded My Instrument Driver, How Do I Use It? Attachments: 
Report Date: 03/19/2003 Last Updated: 03/22/2007 Document ID: 2VIGOOWH |
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