how to make the log file using the labview?

[Adlebrand]

Hi,

I am also a beginner in labview but it seems to me that Kyle has already ansered your question.

W.R.T logging data automatically, functions pallete>programming> file i/o> write to spreadsheet/measurement file. 

[Thør]

You should try using the "Write to Measurement File" function to save your data.  This function can be found in the File I/O palette.  For the file type, if you pick "TDMS" you will be able to open this data in Excel using the TDM Add-in.  I hope this helps!