Adding in a Datalog file

I'm unable to add data to the datalog file in the attached example.  It saves the data to the first save iteration but won't add data on subsequent iterations save.  In exmple atteched save iteration is 5 seconds.  In the effective application of the iteration save will be hourly because a few days worth data necessary to be connected at a rate of 50 MS.

Please indicate how I can get it to add data and how the example can be improved.

I'm using Win - XP and LV 8.6.

Thank you

Dave

Hi dj,

you are writing in the file of datalog - it grows with time...

The problem is: you read only the first datablock!

You write the revenge of 100 lines and if you read the revenge of 100 lines.

While you always open the file again you always read the first datablock... And the number of reading is unwired, so by default! comes into play!

I suggest you:

-Use a queue to move data between the loops.

-Use a different dataformat such as simple binary files. What happens when you allow 25 rows of data, but want to read 100 lines of data? (Which is what happens when reading and writing data type will be different?)

Tags: NI Software

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