1. First, open the WinCC screen editor, select the screen to add historical curve, find the curve drawing tool in the toolbar, click Open, select the position to add historical curve in the screen, and left-click to drag the curve drawing area.

2. Secondly, in the property window, select the data binding tab, find and select the historical data under data binding, select the point or label to retrieve the historical curve, and set it.

3. Finally, save and close the property window.