Overview
A trend control, as in the device specific configuration in a HMI device screen. Assign the plant view to your HMI device in order that the trend control can graphically represent the values of the data members of the individual plant objects in runtime.
The trend control allows you to display current and logged values for a specific time window, for example.
As with device-specific configuration, when you configure the trend control for the display of the data values you define the sources from which the values are obtained on the HMI device in runtime. The following sources are available:
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Current process values from data members of the plant object types
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Archived values from logging tags
The path of the plant object is shown in the trend control when displayed in runtime.