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Getting Started

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GETTING STARTED WITH ARENA<br />

Prompt<br />

Queue Type<br />

Queue Name<br />

Set Name<br />

Set Index<br />

Attribute Name<br />

Expression<br />

Description<br />

Type of queue used to hold the entities while waiting to access<br />

the transporter, either an individual Queue, a queue Set, an<br />

Internal queue, or an Attribute or Expression that evaluates to<br />

the queue’s name.<br />

Name of the individual queue.<br />

Name of the queue set.<br />

The index into the queue set. Note that this is the index into the<br />

set and not the name of the queue in the set. For example, the<br />

only valid entries for a queue set containing three members is an<br />

expression that evaluates to 1, 2, or 3.<br />

The attribute name that will be evaluated to the queue name.<br />

Expression evaluated to the queue name.<br />

Transport module<br />

DESCRIPTION<br />

The Transport module transfers the controlling entity to a destination station. After<br />

the time delay required for the transport, the entity reappears in the model at the<br />

Station module. Free-path transporters are always moved to the same station<br />

destination as the entity. Guided transporters may be moved to a different network<br />

location than the entity’s station destination using the Guided Tran Destination Type.<br />

If a free-path transporter is being used, then the time delay to move the entity and<br />

transporter from one station to the next is based on the velocity of the transporter and<br />

the distance between the stations (specified in the Distance module). If a guided<br />

transporter is being used, then the time delay to transport the entity depends not only<br />

on the velocity and distance to the guided transporter’s destination, but also the<br />

transporter’s acceleration, deceleration, and any traffic it encounters on the way.<br />

When an entity enters the Transport module, its Station attribute (Entity.Station) is set<br />

to the entity’s destination station. The entity is then transported to the destination<br />

station.<br />

If the station destination is entered as By Sequence, the next station is determined by<br />

the entity’s Sequence and Jobstep within the set (special-purpose attributes<br />

Entity.Sequence and Entity.Jobstep, respectively).<br />

98

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