Can you please help me? How can I get a trend display to be showing trends all the time?
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I am assuming you are referring to historical trends.In order to view trends from a past time/date, the parameter values must be logged via basic history logs.
In library structure you will have to create a Log template which describes the log conditions.To the signal type/concerned parameter, a log configuration aspect must be added, which is linked to the log template created in the library structure. Once this is done, in the trend display, the logged parameter must be linked to a trend curve.
kindly, refer to 800xA online help for more detailed explanation.