aikona

You could also have one DB per week ( 52 DB's per year) or have 7 DB's ( one for everyday of the week)or jump to a next DB went you reached a certain DBW till you reach the 'last' DB and rotate back to the first DB Greetings Eric

A readable file = CSV file .You could enjoy yourself to 'write' this using a DB but .best solution is to use a OP/TP that can send a CSV file to your MySQL server .A TP177 DP PN can do that ,Get an exact scope of supply from the <Company> We are using S7-412's in combination with OP270's , every alarm is logged into a text file ( CSV format) and then I wrote a little program in Delphi to analyze these text files and insert all the new alarms into a MySQL database .This program runs on the MySQL server.Six months of logging gives me about 4 million records Greetings Eric

Siemens sells a switch in the scalance range that you could look at .It is designed to be used with VPN see link And a brochure on the scalance S Eric

Hi here is a converted program you need to check the hardware ( I took a 313C) ,need to check the software Tempco_1.zip