Siemens S7-400, Exporting the online DB values to Excel or text file

mailken

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Join Date
Jan 2011
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MT
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I am currently working on a project where i need to save the online DB values to a .CSV or text file. This has to be done at say an interval of 1second.

I will be logging test data at a fixed sampling time (sa stated above)into the PLC internal DB's. This then needs to be saved into a '.CSV' , text or '.INI' file making room for the next sampling data.

Can any one out there help me and guide me from where to start. I can do some simple programming in C as well.
 
I'd start by looking at an OPC server.

You could also save the data from that DB into another storage DB and recover at longer intervals.
 

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