With an XY trend there is always the risk that the plot area is filled up, new points are drawn, old ones are not deleted.
I tried to avoid that by setting the time filter in the screen switch on relative, for example on 1 minute.
But then the old points are not deleted, so the problem still exists.
As a workaround I found the possibility to use online vars, with the HD-data storage on 1 minute.
Then with a screen-switch every minute I get what I want.
But with data from an archive thatís not working, after a new screen switch much more data is displayed as defined in the screen switch function.
I tried to shorten the save cycle for the archive, but thatís not helping and giving weird display results.
What is a solution for this?