7.1.2 HMI Touch Screen OverviewThis section describes the navigation through the various displays on the HMI touch screen. The graphic display detects the Operator’s touch on the screen surface. Typically, this touch may be relatively light and still function well. Touch button representations, go-to buttons, and keypad representations are used to make some changes to the system, to start or stop a process, or to go to another screen. Touch Screen Controls Overview