The Read From Spreadsheet File function (on the File I/O palette) is for reading comma separated files. Just set the delimiter input to be a comma instead of a tab (\t). To write in Excel format, you need to use ActiveX. Look at the shipping example Write Table to XL and modify it, buy the Report Generation Toolkit, or search the forum and NI Zone for numerous example of Excel and ActiveX.
I have a block diagram that runs the equation but I need input values from .CSV excel file to do that. Attached is my block diagram diagram and CSV file..could anyone modify Block Diagram to get the data from .CSV file..