Select parameter or variable value
Simulink / Dashboard
The Check Box block allows you to set the value of a parameter or variable during simulation by checking or clearing the box. Use the Check Box block with other Dashboard blocks to create an interactive dashboard for your model.
Double-clicking the Check Box block does not open its dialog box during simulation and when the block is selected. To edit the block's parameters, you can use the Property Inspector, or you can right-click the block and select Block Parameters from the context menu.
Dashboard blocks do not use ports to connect to make connections. To connect dashboard blocks to variables and block parameters, 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.
You can modify dashboard block connections in your model during normal and accelerator mode simulations.
Dashboard blocks cannot connect to variables until you update the model diagram. To connect dashboard blocks to variables or modify variable values between opening your model and running a simulation, update the model diagram using Ctrl+D.
To enter connect mode, pause on an unconnected dashboard block and click the Connect button that appears above it.
In connect mode, when you select one or more signals or blocks, a list of parameters and variables available for connection appears. Select a variable or parameter from the list to connect to the selected dashboard block. To connect another dashboard block, pause on another dashboard block and click the Connect button above it. Then, make a selection of signals and blocks in your model and choose a variable 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.
You can hide the message shown on unconnected blocks using the
set_param function with the
block parameter. The message also disappears when you connect the block.
Tunable parameters connected to dashboard blocks are logged to the Simulation Data
Inspector, where you can view the parameter values along with logged signal data. You can
access logged parameter data in the MATLAB® workspace by exporting the parameter data from the Simulation Data Inspector
by using the UI or the
Simulink.sdi.exportRun function. For more information about exporting
data using the Simulation Data Inspector UI, see Export Data from the Simulation Data Inspector. The
parameter data is stored in a
Simulink.SimulationData.Parameter object, accessible as an element in the
Except the Dashboard Scope block and the Display block, 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.
When you simulate a model hierarchy, dashboard blocks inside referenced models do not update.
Dashboard blocks do not support rapid accelerator simulation.
Some signals are not available during accelerator mode simulations. To view these signals using a dashboard block, mark the signal for logging.
When you specify a block parameter value by indexing a variable array, the parameter
does 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 connect a dashboard block to a variable or parameter during simulation, the data for that variable or parameter is not logged to the Simulation Data Inspector. To log variable and parameter data to the Simulation Data Inspector, connect the dashboard block to the variable or parameter prior to simulation.
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, Gain blocks display changes made to the Gain parameter using the dashboard blocks, but the Gain value used in the simulation does not change.
Connection— Select a variable or block parameter to connect
Select the variable or block parameter to control using the Connection table. To connect the block to a signal:
Make a selection in the model that includes one or more blocks.
Select the variable or parameter you want to connect.
To facilitate understanding and debugging your model, you can connect Dashboard blocks to variables and parameters in your model during simulation.
To see workspace variables in the connection table, update the model diagram using Ctrl+D.
To programmatically connect a dashboard block to a tunable parameter or a
variable, use a
Simulink.HMI.ParamSourceInfo object. The
Simulink.HMI.ParamSourceInfo object contains four
properties. Some of the properties apply to connecting dashboard blocks to
parameters, and some apply to connecting dashboard blocks to variables. Not all
fields have a value for a connection because a given dashboard block connects to
either a parameter or a variable.
Check Box Label— Description of check box action
Label(default) | character vector
Label that appears next to the check box. You can use the Check Box Label to describe what happens in your model when you check the check box.
|Type: character vector|
Checked/Unchecked Values— Values to assign for checked and unchecked states
1(default) | scalar
Value to assign to the connected variable or parameter for the checked and unchecked block states.
Unchecked — Value assigned to the connected
parameter when the Check Box block is not
Checked — Value assigned to the connected
parameter when the Check Box block is
You set the Unchecked and
Checked values programmatically using a
1 vector that contains
the Unchecked and Checked
values, in that order.
Label— Block label position
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.
|Type: character vector|
Dashboard blocks are ignored for code generation.