Trends displays provide a graphical plot of time versus the value of specific process variables and provides a valuable tool to virtually display historical as well as real-time values in a single window. In APACS+ OS, a trend window can be assigned to a designated graphic or launched from the standard toolbar and opened in any graphic on the system. The operator can choose which tags to trend and save the results.
This video shows out-of-the-box process trends in APACS+ OS and compares them with the Wonderware InTouch method.
There is also a how-to that shows you how to compare a current trend to a historical trend of the same variable.