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Questions tagged [statechart]

A statechart is a hierarchical state machine, introduced by Harel. Since it is hierarchical, its capability to reduce complexity and state proliferation allows to be used also for real-world problems and not only for toy or theoretical examples. The UML state diagram is an OO adaptation of the Harel statechart.

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Hierarchical State Machine with Graphviz

I'm trying to make a State diagram of the Vendor Machine with the help of Graphviz. I want a outcome close to this one. It consists of nested State Machines as well. Here is what I have done so far in Graphviz. Please find the online demo…
Gaurav Saxena
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Specifying agent properties when using .inject()

For logic testing purposes, I am using a clickable button triggering "source.inject()." The preceding logic for the agents is dependent on agent characteristics. Thus, it is preferable to have control over which characteristics they get during…
Gaute
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Accessing specific Agent during Runtime by clicking on it in 2D-view, debugging

I am debugging my simulation. There is a patient (agent) that is stuck where it should not be. I want to see where in the statechart the patient is stuck but I find it tedious to punch through the list of agents in Developer panel every time and…
Gaute
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Checking agents in a Seize Block

I wonder how I can trigger a conditional state chart transition (located in an agent, Patient) by checking if a queue (located in Main in a Seize Block) contains patients with a certain characteristic (p_contaminated, boolean parameter here should…
Gaute
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Statechart diagram - What's the difference between entry and do?

I know that action starts to execute upon the entry, and the actions executes for do as long it's in the state. but I think there's a lack of definition for entry, is it similar to do or the action executes upon entry to the state and it keeps…
Mostfa shma
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IAR VisualState Requiring Trigger For Every Expression inside a State

I have been using State machine based design tools for some time, and have seen UML modeling tools that allow you to execute your logic (call functions, do other stuff) inside a state. However, after spending a couple days with IAR VisualState, it…
Rob
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Recording state changes in boost::statechart

For Unit Testing, I'm trying to record all the state transactions after I kick off a state machine event. E.g., if I post_event A to the fifo_scheduler of an async_state_machine, the state machine will go through states B, C, then back to D. Without…
kenyee
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State machine/ State chart in-cycle transition

If a state machine is called periodically (in MatLAB Simulink or PLC program), is it possible to transition between states during the same plc cycle/simulink step?. In Twincat 3 (PLC) there is such an option "Cycle-internal" as in link below:…
Sherif Ibrahim
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Anylogic Statechart timer?

I want to know if it's possible to time how long the system has been in a specific state? And when it leaves the state, the "stopwatch" stops and then carries on when the state is once again entered? If so, how?
Andrea Kuther
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Anylogic statechart with loops to set 3 suites as idle or scheduled

(Main.java:935)__(NPE Error Image) I have 3 identical suites represented as an agent type ProductionOrder. A button on main sends a call to inject to the source on main. The source creates a ProductionOrder agent and has the following code in its…
Harrison Pressman
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How do I depict a return statement in an UML state machine?

Is it possible to display a return statement as the description of a transition in an UML statechart? Is there any defined syntax or convention? Example: int doSomething() state 1 --- return doSomething() ---> state 2 I didn't find anything fitting…
Yeliz
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UML Statechart Diagrams + Navigation Bar + Multiple exit actions

Hope all is well! I am making a UML statechart diagram for a website. If you have a navigation bar, would/can you have multiple exit actions representing each link?
galal27
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How to create dependencies in statechart?

Example StateChart I've got a system, that is depending on another system. I want to display this in a statechart. System 1: microwave_state with two states: On and Off When microwave_button is pressed AND system 2 current state is true, then…
aydogdu
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Use-case, class and statechart diagram examples

I wish to learn about the diagrams mentioned in the title but on the internet one can find a lot of trash, I have seen some that contradict each other. Hence I wish someone experienced if they could spare a minute to direct me to reliable sources…
agiro
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Anylogic - Understanding communication between agents

Consider two agents, with statecharts. Now I have read that the two are able to communicate or make use of each others statecharts, via messages. Now, the question is, how does this method of communication work ? As in does a message initiate the…
mahesh Rao
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