Graphs: Displaying Values in HMI Displays

Bar and Shape graphs can be used to show how values progress. You can use them together with other Display elements to help operators track system progress and status.

This is a sample of an HMI Display and how its elements can look on the controller's LCD.

Inserting the Graph

Defining the Graph

Standard Vision: V120/230/260/280/290 Monochrome

Enhanced Vision

Parameter	Type	Function
Direction	Selection option	Select the direction in which the bar will grow
Min/Max	Constant or register	Sets Limits
Fill Color	Selection option	Click to open Color pallet and select a color for the bar

Click the tabs to configure the appearance of the Meter.

Tab	Function
Arc	Click and drag the slides to adjust the Radius, Arc Angle, and Rotation
Needle	Adjust the appearance of the needle
Ticks	Adjust Tick length and thickness
Label And Background	Edit the Meter name, and select a background color or image
Ranges	Assign colors to different sections of the Meter's Arc

Display different versions of the same meter by changing an index number.

Place a List Of Meter element.
The default Index number is 0.
Use Append and Insert to create new Index Numbers.
For each Index Number, define Appearance properties.
In your program, display a unique version of it by selecting an index number.

Note	Append and Insert do not place a blank row into the list. These actions duplicate the properties of the current selection (the meter that is open in the editor when you click Append or Insert.) You may then use the arrows to scroll to the new index, and edit its properties.

Properties of Appearance

Tab	Function
Arc	Click and drag the slides to adjust the Radius, Arc Angle, and Rotation
Needle	Adjust the appearance of the needle
Ticks	Adjust Tick length and thickness
Label And Background	Edit the Meter name, and select a background color or image
Ranges	Assign colors to different sections of the Meter's Arc

Parameter	Type	Function
Tanks	Selection option	Select the tank type
Min/Max	Constant or register	Sets Limits
Fill Color	Selection option	Click to open Color pallet and select a color for the tank

If the background color is displaying incorrectly, note that a tank object should not be placed on a white background. In this case, certain tank objects might be partially framed in yellow frame. Any other color may be used. In addition, note that changing the background color of the display does not change the background color of the .emf tank graphic.

The bars in a LED graph represent a changing value in the same way that the lights of a stereo equalizer represent the sounds. You configure the number and color of the LEDs in the graph.

Parameter	Value
Number of LEDs	Maximum number = 32.
Min/Max	Depends whether the link is to a single or double register; for example MI range is 32768 to +3276; ML range is -2,147,483,648 to +2,147,483,647.
LEDs Preview	Use the slider to check the appearance of the graph.
Fore Color	Click to edit the color surrounding the LEDs.
Direction	Changes the orientation of the graph
From	Assigns the number of LEDs to the value range. For example, the following image shows that the low range assigned to Green is 0-30; there are 3 bars assigned to that range.

Note ♦

The minimum width of a LED bar is 2 pixels, and that the space between bars is 2 pixels. If the height of the graph is not evenly divided by the number of pixels used by the bars and spaces, the remaining pixels will be colored as the Fore Color.

Represents a value by changing the level of a thermometer icon.

Parameter	Value
Min/Max	Depends whether the link is to a single or double register; for example MI range is 32768 to +3276; ML range is -2,147,483,648 to +2,147,483,647.
Ticks	Change number and color.