I'm writing a VI that updates a file whenever it is running, but on a new day a new file is created that is updated up to what a new day begins.
I wrote a VI to create and update a file as many times as necessary on any given day. Any other day, a new file is created which, from that day there will be updated every time that the VI is executed and so on. The problem is that when I run time VI, the first of a new day, that is to say when the file is created only data are written to the file and not the header data. When the file is added, the data header and regular data is successfully written to the file. Can someone tell me how to fix this? A copy of the VI that I wrote is attached.
Thank you
Chuck M.
You had written header information when it was not an existing file, and then you overwrote this file with another file consisting only of data because you wired the "add to the file? (new file:F)' the same for the two functions (F requires to create a new file). I put the write function header in a structure of business because you only want to run when it comes to a new file (otherwise it will overwrite what's there). Wire the straight path through the case of forgery. I plugged a REAL data entry function to always add (because there's always a file at the time wherever the program there).
Jim
PS - a few other comments
- Avoid structures of the sequence
- You don't need the property node
- Use the features of path (no chain)
Tags: NI Software
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