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I would like to create an HMI application that stores the values of 800+ tags once a second. The stored data would be used to 1) display trend graphs (that's the easy part), and 2) change the graphical representation of the process operating status (item colors, positions, displayed values, etc)on the different screens based on a position of a slider bar, or similar device representing the time range of the stored data. In other words, the same way you can move "back through time" with a trend graph...you would be able to do the same with the screen graphics (which could also show the realtime picture when desired). Anyone done this...or seen this kind of thing? Thanks!