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backup and restore of retained tags

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Hi support team,


scince UniLogic 1.17.58 it is possible to upload and download retained tags.(Also in UniApps it is possible to backup and resotre all retained tags to and from a DOK)

I often use "user editable" parameters like timers or other values as retained tags. In case of an empty CPU battery all this settings would be lost (and of course the machine would not work correct).


My solution at the moment is to save all retained values into a datatable and write this datatable to a file (DTI to file function). This workaround is not very comfortable.


What I would prefer is a solution like it is now in the UniApps. There i can backup and restore all retained tags to and from the DOK.

Is there any possibility to write a function block that can trigger a backup and restore from and to the SD card? It would be much easier for the Operator, because there would be no need to enter the UniApps (with using a function block I could provide backup and restore buttons for the operator directly in the Visualization).


Is there any possiblity? Maybe with using C function?

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