Screen Window minimum and maximum zoom factor

Hello everyone,

Just got an MTP1200 and am testing out WinCC Unified  and learning the basics of Java script.

I ran into a small problem and was hoping someone here knows how to solve it.

I am trying to limit the amount of zoom possible in a screen window. To do this I wrote a script for the zoom - factor of the Screen Window that I want to limit. The script is the following:

The idea is variable zoom is loaded with the actual zoom factor of the screen window and the If statements compares the actual zoom and creates the min and max limits. The problem is this is not working. I am not sure why this is not working and I am also not sure if this is the correct way to do it. Any ideas or suggestions?

oh almost forgot I am using TIA V19 update 2

Thanks

Ok so I tried a different way. The button I press to load the screen window with the new screen, I have a script where I turn on the zoom for the screen window. I now tried setting the min and max zoom via the screen window properties and still does not work. The window still zooms the default 1% to 800%

I don´t get it. I thought for sure this would work. 

Hi Stefan,

First off thank you for all the help you have been. I have learned a lot through most of your answers here on the forum .

And thank you for taking the time to help me out on this problem I am having. Now that you mention it, my script was going to run with a time cycle which would be creating a constant load for nothing  so first solution is scraped and thanks to you I now know why my second attempt does not work. So the properties that I was using needed to point to a layer in the screen and has nothing to do with what I want. I had noticed the min and max zoom properties on the layers and through testing found out that they are indeed to enable the view when zoom factor is within the range.

I just tried out you suggestion on the change of the zoom - factor of the screen window but it did not work. I will add a print screen to make sure I implemented it correctly. I don´t know why there isn´t an easier way to limit the zoom of a window seems to me worthy of an integrated  property field for a screen window.

Hi guys,

Thanks for the help I opened a ticket with support at the beginning of the week and got an answer yesterday too. It was indeed the "fit screen to window" property that was active and conflicting with zoom factor manipulation and not the script I had written. wish I had found your post Murof would have saved me time and that of the support team. well always learning and one more thing to add to my Unified notes  Hope this finds anyone that has the same problem. 

Thanks again guys for the help