Display
Display signal value during simulation
- Library:
Simulink / Dashboard
Description
The Display block connects to a signal in your model and displays its value during simulation. You can configure the appearance and format of the Display block to make intuitive sense for the value it displays. You can edit the parameters of the Display block during simulation. The Display block can display complex, vector, and 2-D matrix signals. Use the Display block with other dashboard blocks to build an interactive dashboard of controls and indicators for your model.
Connect Dashboard Blocks
Dashboard blocks do not use ports to connect to model elements. To connect dashboard blocks to signals in your model, use connect mode. Connect mode facilitates the process of connecting dashboard blocks in your model, especially when you want to connect multiple blocks at once. To connect a single dashboard block, you can also use the Connection table in the block dialog box.
Tip
You can modify dashboard block connections during normal and accelerator mode simulations.
To enter connect mode, select a dashboard block to connect. Then on the block tab, click Connect. In connect mode, when you select one or more signals or blocks, a list of signals that are available for connection appears. Select a signal from the list to connect to the selected dashboard block. To connect another dashboard block, pause on the block you want to connect and click the Connect button above it. Then, select one or more signals and blocks in the model and choose a signal to connect.
When you finish connecting the dashboard blocks in your model, on the block tab, click Done Connecting.
Tip
You can hide the message shown on unconnected blocks using the
set_param function with the ShowInitialText
block parameter. The message also disappears when you connect the block.
Limitations
You cannot use the Connection table to connect a Dashboard block to a block that is commented out. When you connect a Dashboard block to a commented block using connect mode, the Dashboard block does not display the connected value until the you uncomment the block.
The toolstrip does not support dashboard blocks that are in a panel.
Dashboard blocks cannot connect to signals inside referenced models.
When you simulate a model hierarchy, Dashboard blocks inside referenced models do not update.
Dashboard blocks do not support rapid accelerator simulation.
You cannot connect a dashboard block to data or activity in Stateflow® during simulation.
Some signals are removed by optimization and are not available during accelerator mode simulations. To view such a signal using a dashboard block, mark the signal for logging.
Parameters
Connection — Signal to connect and display
signal connection options
Use the connection table to select the signal to connect to the block. To connect the block to a signal:
Make a selection in the model that includes one or more signals.
In the table, select the signal you want to connect.
Click Apply.
Tip
You can connect dashboard blocks to signals in the model during simulation.
Programmatic Use
Block Parameter:
Binding |
Type:
Simulink.HMI.SignalSpecification |
Default:
[] |
Format — Format for displaying signal values
short (default) | long | shortE | longE | ...
Format for displaying signal values, specified as one of these values:
short— Scaled fixed-decimal format with four digits after the decimal pointlong— Scaled fixed-decimal format with fifteen digits after the decimal point fordoublevalues and seven digits after the decimal point forsinglevaluesshortE— Scientific notation format with four digitslongE— Scientific notation format with fifteen digits after the decimal point fordoublevalues and seven digits after the decimal point forsinglevaluesshortG— Data takes the more compact format between fixed-decimal or scientific notation, with a total of five digitslongG— Data takes the more compact format between fixed-decimal or scientific notation, with a total of fifteen digits fordoublevalues and seven digits forsinglevaluesshortEng— Engineering notation where the exponent is a multiple of 3, with 4 digits after the decimal pointlongEng— Engineering notation where the exponent is a multiple of 3, with 15 significant digits+— Positive/negative format.+,-, and blank characters are displayed for positive, negative, and zero values, respectivelybank— Currency format with 2 digits after the decimal pointhex— Hexadecimal representationrat— RatioCustom— Custom string format. Data is displayed in a custom string that you specify using the Format String parameter.Integer— Data rounded to the nearest whole number.
Programmatic Use
Block Parameter:
Format |
| Type: character array | string |
Values:
'short' | 'long' |
'shortE' | 'longE' |
'shortG' | 'longG' |
'shortEng' | 'longEng' |
'bank' | '+' |
'hex' | 'rat' |
'Custom' |
'Integer' |
Default:
'short' |
Format String — Custom string to format data
'%d' (default) | string
Custom string to format displayed signal data, specified as a string. The
format string consists of text and format operators, which start with a
% sign and end with a conversion character. Use the
format operators at the place in the string where you want the signal data
to display. For more information about supported formatting operators, see
the formatSpec input of the compose function.
Example: The value of pi is %.2f displays the value of
the connected signal within a sentence.
Example: $%.2f displays the value of the connected
signal with a dollar sign and two decimal places.
Dependencies
To enable this parameter, set the Format
parameter to Custom.
Programmatic Use
Block Parameter:
FormatString |
| Type: character array | string |
Default:
'%d' |
Alignment — Text alignment in block
Center (default) | Left | Right
Text alignment in the Display block.
Programmatic Use
Block Parameter:
Alignment |
| Type: character array |
Values:
'Left' | 'Center' |
'Right' |
Default:
'Center' |
Label — Block label position
Hide (default) | Bottom | Top
Position of the block label. When the block is connected to an element in the model, the label is the name of the connected element.
Programmatic Use
Block Parameter:
LabelPosition |
| Type: character vector |
Values:
'Hide' | 'Bottom' |
'Top' |
Default:
'Hide' |
Opacity — Specify block opacity
1 (default) | scalar
Opacity of the block, specified as a scalar value between 0 and 1.
Example: 0.5
Programmatic Use
Block Parameter: Opacity |
| Type: scalar |
Default: 1 |
Layout — How to arrange elements of non-scalar data
Preserve dimensions (default) | Fill available space
How to arrange elements of non-scalar data, specified as one of these options:
Preserve dimensions— Display elements arranged to match signal dimensions.Fill available space— Display as many elements as possible within available space.
Programmatic Use
Block Parameter:
Layout |
| Type: character array | string |
Values:
'Preserve dimensions' | 'Fill available
space' |
Default:
'Preserve dimensions' |
Show grid for non-scalar signals — Whether to show grid
on (default) | off
Whether to show a grid on the block when the block displays non-scalar data. Specify the color of the grid using the Grid Color parameter.
Programmatic Use
Block Parameter:
ShowGrid |
| Type: character array | string |
Values:
'on' | 'off' |
Default:
'on' |
Foreground Color — Block foreground color
[r g b] vector
Block foreground color, including the text. You can select a color from a palette of standard colors or specify a custom color.
Programmatic Use
Specify the ForegroundColor parameter for the block as a 1-by-3 [r g b] vector with values between 0 and 1.
Block Parameter: ForegroundColor |
Type: [r g b] vector |
Default: [0 0 0] |
Background Color — Block background color
[r g b] vector
Block background color. You can select a color from a palette of standard colors or specify a custom color.
Programmatic Use
Specify the BackgroundColor parameter for the block as a 1-by-3 [r g b] vector with values between 0 and 1.
Block Parameter: BackgroundColor |
Type: [r g b] vector |
Grid Color — Block grid color
[r g b] vector
Block grid color. The grid shows when the block displays non-scalar data. You can select a color from a palette of standard colors or specify a custom color.
Programmatic Use
Specify the GridColor parameter for the block as a
1-by-3
[r g b] vector with values between
0 and 1.
Block Parameter:
GridColor |
Type:
[r g b] vector |
Default:
[0.502 0.502 0.502] |
Model Examples
Block Characteristics
Data Types |
|
Direct Feedthrough |
|
Multidimensional Signals |
|
Variable-Size Signals |
|
Zero-Crossing Detection |
|