Autor Thema: DLOG_STORE_FILE_CSV  (Gelesen 75 mal)

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Offline tomnord

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DLOG_STORE_FILE_CSV
« am: 27. September 2017, 13:19:16 »
Hello. I'm trying to set up a datalog with dlog_store_file_csv. I'm sort of getting it to work, but I am a bit unsure as what is triggering the write to file.
Will the FB store data in buffer untill buffer is full, and then generate the file?
I'm looking to log a value once every 24h, and a new file every month.
The file renaming bit I have covered, and set up Trig_T to 86400(24h).
When Trig_M is set to high, does the FB empty buffer to file? what then happens when Trig_T does the same at timeout? Will the file be overwritten?
Does the Enable input need to be set high in order for the FB to do anything?
Is there a sample project that I could check out?


Regards
Tom

Offline tomnord

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Re: DLOG_STORE_FILE_CSV
« Antwort #1 am: 29. September 2017, 11:02:10 »
Also, is it possible to get the fb to continuously write to a new line in the csv? So that if I log a new value  it just adds it to an existing file. In that way, I can get new values without adding new files.
Is this possible?

Offline peewit

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Re: DLOG_STORE_FILE_CSV
« Antwort #2 am: 29. September 2017, 19:30:35 »
open the library as a project and see the folder "demo".

take a look at the example DLOG_FILE_CSV


use the parameter "auto_close" so that the data is written regularly to the file and the file is also closed so that you can read it.