Small Datalogging in S7

Hello sirs,
Like I saw on an other place an older but simular tread that was not very clear, I asked you the same of you have an idee or small example how I can on a simple way put data, ex. flow (INT) with DT Timestamp in a DB for ex. 24h.
After 24h I will call with ex. a modem from an other place to read/empty the DB.
Thanks and have a good day.

I think this is what you look for?

Here's another logger. I've created 31 DBs so the data will be logged in DB1 for the 1st of the month, DB2 for the 2nd etc. so you can leave the data logging and retrieve it within a month.

FB1 uses a 1 minute timer to call FB2 every minute and the integer to be sampled is stored in the relevant DB along with the time stamp in decimal format. I've not used the DT data type in the DB because you cannot monitor it in the DB view when testing. When a new DB is detected, the DB is filled with zeros after which the sampled data is filled in.