Simulink Reference

Simulation Commands

The following section describes commands that you can use to run simulations manually.

Task-Oriented List of Commands

This table indicates the tasks performed by the commands described in this chapter. The reference section of this chapter lists the commands in alphabetical order.

Task
Command

Create a new Simulink system.
new_system

Open an existing system.
open_system

Close a system window.
close_system, bdclose

Save a system.
save_system

Find a system, block, line, or annotation.
find_system

Add a new block to a system.
add_block

Delete a block from a system.
delete_block

Replace a block in a system.
replace_block

Add a line to a system.
add_line

Delete a line from a system.
delete_line

Add a parameter to a system.
add_param

Get a parameter value.
get_param

Set parameter values.
set_param

Delete a system parameter.
delete_param

Get the pathname of the current block.
gcb

Get the pathname of the current system.
gcs

Get the handle of the current block.
gcbh

Get the name of the root-level system.
bdroot

Open the Simulink block library.
simulink

Task	Command
Create a new Simulink system.	`new_system`
Open an existing system.	`open_system`
Close a system window.	`close_system, bdclose`
Save a system.	`save_system`
Find a system, block, line, or annotation.	`find_system`
Add a new block to a system.	`add_block`
Delete a block from a system.	`delete_block`
Replace a block in a system.	`replace_block`
Add a line to a system.	`add_line`
Delete a line from a system.	`delete_line`
Add a parameter to a system.	`add_param`
Get a parameter value.	`get_param`
Set parameter values.	`set_param`
Delete a system parameter.	`delete_param`
Get the pathname of the current block.	`gcb`
Get the pathname of the current system.	`gcs`
Get the handle of the current block.	`gcbh`
Get the name of the root-level system.	`bdroot`
Open the Simulink block library.	`simulink`

Specifying Parameters and Object Paths

This section explains how to specify parameters and object paths required by model construction commands.

How to Specify Parameters for the Commands

The commands described in this chapter require that you specify arguments that describe a system, block, or block parameter. Appendix , "Model and Block Parameters, provides comprehensive tables of model and block parameters.

How to Specify a Path for a Simulink Object

Many of the commands described in this chapter require that you identify a Simulink system or block. Identify systems and blocks by specifying their paths:

To identify a system, specify its name, which is the name of the file that contains the system description, without the mdl extension.

```
system
```

To identify a subsystem, specify the system and the hierarchy of subsystems in which the subsystem resides.

```
system/subsystem₁/.../subsystem
```

To identify a block, specify the path of the system that contains the block and specify the block name.

```
system/subsystem₁/.../subsystem/block
```

If the block name includes a newline or carriage return, specify the block name as a string vector and use sprintf('\n') as the newline character. For example, these lines assign the newline character to cr, then get the value for the Signal Generator block's Amplitude parameter.

cr = sprintf('\n');
get_param(['untitled/Signal',cr,'Generator'],'Amplitude')
ans =
   1

If the block name includes a slash character (/), you repeat the slash when you specify the block name. For example, to get the value of the Location parameter for the block named Signal/Noise in the mymodel system.

get_param('mymodel/Signal//Noise','Location')

slmdldiscui model