如何
创建实时绘图趋势图
您可以创建实时绘图趋势图，以实时显示变量。
The real-time plot is a variable displayed directly in the trend chart. The real-time plot is an instant reflection of the variable, so the history of the real-time plot is lost when the trend chart is closed. However, the history is not lost for I/O points that have implicit logs where approximately 500 records of history are displayed.
A real-time plot trend chart updates and draws a solid series each time it registers that the variable has a new value. If the variable remains on the same value, the series is drawn as a dotted line.
When you save a real-time plot trend chart, a trend chart object is created that you can reach from the System Tree pane.
A real-time plot can only be displayed in a trend chart and not in a trend log list.
在 WorkStation 的 系统树 窗格中，选择要在实时绘图趋势图中显示的变量。
在 操作 菜单中，指向 视图 ，然后点击 新趋势图 。
点击 保存 按钮
。action_zoom_plus_stroke 
浏览到要保存实时绘图趋势图的位置。
点击 保存 。
保存实时绘图趋势图时，会在系统树窗格中创建趋势图对象。
Real-Time Plotting
趋势图视图
保存趋势图设置