Getting Started

3 • THE BASIC PROCESS PANEL
Data modules
Data modules are the set of objects in the spreadsheet view of the model that define
the characteristics of various process elements, such as resources and queues.
Attribute module
DESCRIPTION
This data module is used to define an attribute’s dimension, data type and initial
value(s). An attribute is a characteristic of all entities created, but with a specific
value that can differ from one entity to another. Attributes can be referenced in other
modules (for example, the Decide module), can be reassigned a new value with the
Assign module, and can be used in any expression. Attribute values are unique for
each entity, as compared to Variables which are global to the simulation module.
There are three methods for manually editing the Initial Values of an Attribute
module:
Using the standard spreadsheet interface. In the module spreadsheet, rightclick
on the Initial Values cell and select the Edit via spreadsheet menu
item. The values for two-dimensional arrays should be entered one column at
a time. Array elements not explicitly assigned are assumed to have the last
entered value.
Using the module dialog box. In the module spreadsheet, right-click on any
cell and select the Edit via dialog menu item. The values for two-dimensional
arrays should be entered one column at a time. Array elements not explicitly
assigned are assumed to have the last entered value.
Using the two-dimensional (2-D) spreadsheet interface. In the module
spreadsheet, click on the Initial Values cell.
TYPICAL USES
• Due date of an order (entity)
• Priority of an order (entity)
• Color of a part (entity)
43