MATLAB: Do I receive an error that there is no named block state with the name for a custom Stateflow chart in R2018b

stateflow

Given is a custom Stateflow chart as show below,

When running the corresponding model the following error message appears,

There is no named block state with the name 'var1' in 'State1'.

see the following figure,

while right after the following Simulink subsystem within State1 opens up automatically in Simulink,

Why do I receive an error that there is no named block state with the name for a custom Stateflow chart in R2018b?

Best Answer

This error occurs because it is used a Simulink State instead of a standard State and variables are added in the title section of the Simulink State which is unexpected. To resolve the issue one has to replaced the Simulink States with standard States as shown in the following figure,

Related Solutions

MATLAB: Do I receive an infinite cycle error when a broadcast event is fired in a state exit action using Stateflow

The infinite cycle that results from a broadcast event being fired in a state exit action is expected behavior according to the specifications of Stateflow. An event fired in the exit action causes an infinite recursion because the state has not yet been exited. To work around this issue, you can try any one of the following:

-- Use directed event broadcast as suggested in the documentation (search for: directed event broadcast).

This will ensure that the event is not processed by the state that throws it.

-- Use an Implicit event.

An example of the usage of implicit events can be found in the following documentation, as well by searching for: implicit event example.

-- Pass events in transition actions.

MATLAB: Change parameter name programmatically in stateflow

function SF_RenameParam(ChartName,ParaOldname,ParaNewname)
    
    rt = sfroot;
    m = rt.find('-isa','Simulink.BlockDiagram');
    %ch = m.find('-isa','Stateflow.Chart');
    ch = m.find('-isa','Stateflow.Chart','Name',ChartName);
    %Rename Parameter in workspace 
    chData = ch.find('-isa', 'Stateflow.Data','-and','Name',ParaOldname);
    chData.Name = ParaNewname;
    %Rename Parameter name in stateflow transition label
    ch_transitions = ch.find('-isa','Stateflow.Transition');
    for index=1:length(ch_transitions)
        LabelStr = ch_transitions(index).LabelString;
        if ismember(ParaOldname,LabelStr)
            ch_transitions(index).LabelString = strrep(LabelStr,ParaOldname,ParaNewname);
        end
    end
end

I hope it's helpful for you (can add find in state),

But sometime it not true for this case: in chart both have ABC and ABC1.

You can modify it follow your ideal

Best Answer

Related Solutions

MATLAB: Do I receive an infinite cycle error when a broadcast event is fired in a state exit action using Stateflow

MATLAB: Change parameter name programmatically in stateflow

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