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5 Designing Paths for Entities

5-10

The three Set Attribute blocks assign a Type attribute to each entity, where the attribute

value depends on which entity generator created the entity. FIFO Queue blocks store

entities that cannot enter the Input Switch block yet because either

• The Input Switch is waiting to receive an entity at a different entity input port,

according to the round-robin switching criterion.

• The Single Server block is busy serving an entity, so its entity input port is

unavailable.

The Attribute Scope block creates a a stem plot of the Type attribute values over time.

Because the Type attribute identifies the source of each entity that arrives at the scope,

you can see the effect of the round-robin switching criterion. In particular, the heights of

the stems in the plot cycle among the values 1, 2, and 3.

1 2 ... 95 96 97 98 99 100 101 102 103 104 105 ... 113 114

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MATLAB SIMEVENTS RELEASE NOTES Guida Utente Pagina 100