MATLAB: How to read the value of the inputs of a block during runtime

blockmodelsimulink

I have a simulink model and I want to read the value of one of the inputs of a subsystem of the main model. I paused during runtime and wrote the following command but it gave error. How do I read the input value?

rto = get_param(gcb, 'Faulty Actuators') gives an error saying : SubSystem block does not have a parameter named 'Faulty Actuators', but the name of the input is Faulty Actuator.

Best Answer

gcb is the current block. So if you need a Value of the Propert 'PropertyName', of the current block, you should do

rto = get_param(gcb, 'PropertyName');

You should have selected the inport block so that gcb points that block. In other words, make that inport as the current block by clicking on it.

If you do not want to click on the block, but know the blocks name, then you can do

rto = get_param(BlockPath, 'PropertyName');

And to know the all the properties of the current block, click on the block(set it as current block), then in command window, type

get(gcbh)

gcbh is the handle of the current block, get(gcbh) will list all the properties and values of the current block.

Related Solutions

MATLAB: Does an error occur when I update a diagram that uses bus objects and Configurable Subsystems in Simulink 6.1 (R14SP1)

This error message is expected since the Bus Selector inside the Configurable Subsystem expects the bus specified by the bus object.

To avoid receiving this error, use a block such as a Bus Creator or an Inport, in the new model to generate the appropriate bus and feed the Configurable Subsystem.

MATLAB: How to have a Bus Selector block accept signal from an Inport block in a subsystem in Simulink

In order to create and build a subsystem, which has an Inport block feeding into a Bus Selector block, perform the following steps:

1. Double click on the Inport Block to view the Block Properties. Click on the Signal Specification tab and check ‘Specify properties via bus object’. Keep the default name as ‘BusObject’. You will have to do this for the Inport blocks at the root level and also within the subsystem.

2. Create the bus object, BusObject, by using the Bus Editor. To create the bus object and edit its properties execute the following code at the MATLAB command prompt:

BusObject = Simulink.Bus
buseditor

In the resulting window, the Bus Editor, add the signals that the input bus will have with the appropriate names. Verify that the change has been saved by typing ‘BusObject’ at the prompt.

3. You should now be able to right click on the system and build it by selecting Real-Time Workshop from the menu.

Best Answer

Related Solutions

MATLAB: Does an error occur when I update a diagram that uses bus objects and Configurable Subsystems in Simulink 6.1 (R14SP1)

MATLAB: How to have a Bus Selector block accept signal from an Inport block in a subsystem in Simulink

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