jraef, we own the software,by saying "without having to pay Siemens" I talk about the additional package called dat@monitor.
We, my company use, external programmers, to construct the WinCC applications for our customers. Sometimes we are asked about exporting the trend data to csv format. The programmers we are using say that it is possible but only if we buy the datamonitor additional package from Siemens....hence my question.