AC500 Historical trend data in visualization
I'd like to ask you for help. I have PM573-ETH and in the visualization in Codesys I am saving trend data to the HDD. My problem is that sometimes (after restarting of connection or power supply to PLC) some of my saved files are deleted or overwritten. Do you have any idea why it could happen? I have set Day in the "File change event" field of trend element.
And second thing is that I would like to have dynamic change of the File name according to the Date (through some variable). Is it possible or only File name with number suffix starting from 0 can be used? Or is it possible to change the File path somehow in the program?
Thanks for the answer
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Most of your questions and problems could be solved, if you use the standard datalogger- which is with in the PS563 library package. Further details can be seen here: http://www05.abb.com/global/scot/scot397.nsf/veritydisplay/01ccb16be06f444cc125