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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 edit the parameters of the Display block while a simulation runs. Use the Display block with other Dashboard blocks to build an interactive dashboard of controls and indicators for your model.

Connecting Dashboard Blocks

Dashboard blocks do not use ports to connect to signals. 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. If you only want to connect a single Dashboard block, you can also use the Connection table in the block dialog box to make the connection.

To enter connect mode, click the Connect button that appears above your unconnected Dashboard block when you pause on it.

In connect mode, when you select one or more signals or blocks, a list of parameters and signals available for connection appears. Select a signal or parameter from the list to connect the selected Dashboard block. To connect another Dashboard block, pause on the block and click the Connect button above it. Then, make a selection of signals and blocks in your model, and choose a signal or parameter to connect.

When you finish connecting the Dashboard blocks in your model, click the Exit button in the upper-right of the canvas to exit connect mode.

Limitations

  • Dashboard blocks can only connect to real scalar signals.

  • 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.

  • Dashboard blocks cannot connect to signals inside referenced models.

  • Parameters specified by indexing a variable array do not appear in the Connection table. For example, a block parameter defined as engine(1) using the variable engine does not appear in the table.

    To access the parameter in the Connection table, assign the indexed value to a scalar variable, such as engine_1. Then, use the scalar variable to define the block parameter.

  • When you simulate a model in external mode with the Default parameter behavior set to Inlined, Dashboard blocks can appear to change parameter and variable values. However, the change does not propagate to the simulation. For example, the Gain block displays changes made to its Gain parameter using the Dashboard blocks, but the Gain value used in the simulation does not change.

Parameters

expand all

Select the signal to connect using the Connection table. Populate the Connection table by selecting signals of interest in your model. Select the radio button next to the signal you want to display. Click Apply to connect the signal.

Programmatic Use

Block Parameter: Binding
Type: Simulink.HMI.SignalSpecification
Default: []

Format for displaying numerical values. You can specify any format supported by the format command:

  • short — Scaled fixed-decimal format with four digits after the decimal point

  • long— Scaled fixed-decimal format with fifteen digits after the decimal point for double values and seven digits after the decimal point for single values

  • shortE — Scientific notation format with four digits

  • longE — Scientific notation format with fifteen digits after the decimal point for double values and seven digits after the decimal point for single values

  • shortG — Data takes the more compact format between fixed-decimal or scientific notation, with a total of five digits

  • longG — Data takes the more compact format between fixed-decimal or scientific notation, with a total of fifteen digits for double values and seven digits for single values

  • shortEng — Engineering notation where the exponent is a multiple of 3, with 4 digits after the decimal point

  • longEng — 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, respectively

  • bank — Currency format with 2 digits after the decimal point

  • hex — Hexadecimal representation

  • rat — Ratio

Programmatic Use

Block Parameter: Format
Type: character array
Values: 'short' | 'long' | 'shortE' | 'longE' | 'shortG' | 'longG' | 'shortEng' | 'longEng' | 'bank' | '+' | 'hex' | 'rat'
Default: 'short'

Text alignment in Display block.

Programmatic Use

Block Parameter: Alignment
Type: character array
Values: 'Left' | 'Center' | 'Right'
Default: 'Center'

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: 'Top' | 'Bottom' | 'Hide'
Default: 'Top'

Block Characteristics

Data Types

double | single | Boolean | base integer | fixed point | enumerated

Direct Feedthrough

No

Multidimensional Signals

No

Variable-Size Signals

No

Zero-Crossing Detection

No

Introduced in R2017b