Graph window

Use

The graph window is used by the operator during supervision to evaluate the state of one or more process components over time and to detect adverse trends at an early stage. IGSS is capable of combining current trends and historical data in the same graphs. The operator can thus see at a glance what happened in the process just before and immediately after an intervention.

Description

A graph can be predefined by the system designer or created on-the-fly by the operator during supervision. A predefined graph belongs to an area and can be accessed from the Graph menu when the parent area is active. To show the name of the graph in the Graph menu, simply check the Name to Menu option when you define the graph.

The properties of a new graph are defined in the New Graph Properties and Define Graph Parameters dialog boxes. Click here for details.

Graph window elements

The graph window contains the following elements. Click the Show Me button to see the location of each element.

Element	Description
Title bar	contains the following elements: $images\ico_sysgrf.gif$ System menu box Click this button to access a menu from which you can move, resize, minimize, maximize and close the current graph window or go to the next graph window. either the name or the description of the graph, for example, MyOwnGraph. The caption can be changed at any time from the Define Graph Parameters dialog box. $images\ico_min.gif$ Minimize button Click this button to minimize the graph window. $images\ico_max.gif$ Maximize button Click this button to maximize the graph window. $images\ico_close.gif$ Close button Click this button to close the graph window.
Graph area	shows the graph according to the properties specified in the Define Graph Parameters dialog box which is accessed by right-clicking on the graph. Note: The best way to check a predefined graph is to launch it from IGSS Supervise.
Horizontal scroll bar	allows the operator to scroll through graph data.
Graph status bar	shows key information about the graph.