I have a page, one of many on an MD4-10 display, that has a number of graphs on it. The display isn't a page that an Operator will usually use, but if they feels somethings is off, or there was a transient/behavioiur they didn't expect or fully catch enough of to report then they can switch to the graphing page and the graphs currently start rendering in real time.
In my scenario given that transients are generally non repeating (or at least the operator doesn't know enough to cause the repeat to occur), I don't want real time starting from when they went to the page, but rather if the graph timeline is say 5 minutes, then I want the graph at activation to show the last 5 minutes of the measure (and hopefully the event they just felt) and overwrite as usual as if the page had been open for longer than the timeline. Is there anyway I can configure the graphs so that they display history rather than just starting at time 0 on page activation?
In my case all the machine core data is going across a J1939 link to a duplicate display, but it generally only updates 5 times a second for most measures (more often for time critical things like Joystick movements etc) which may not catch a transient. But I could set up a J1939 Data Logger but it would seem a shame to me given that what is in the software almost does what I want anyway?
Any thoughts on how to either configure what I want or to set up a capture solution in design or other approaches people have used?
If this was possible is there some way to stop the graph advance of time with a button so a picture or screen capture can be taken showing the captured behaviour we want before its overwritten or falls off the end?
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