hello All 

i am looking for  help on the each of the TO.<parameters> 

when right cliking   on the TO  we can see all of his Parameters ( as a DB )  .

I want to understand each of the meaning of this parameter , where can i find this kind of data ? 

These are described in the function manuals of the TOs, at the end of each.
See here for the overview of the different manuals: https://support.industry.siemens.com/cs/us/en/view/109812056/160226658955

Regards,
daviso