CIMPLICITY classes provide you with the tools to create the definitions for points (class data items) that can calculate data and numeric expressions that provide rules for object data items (e.g. alarm high limits).

These definitions can contain variables, which can be substituted for real values at the object level. You, the class developer, have control over what can be modified at the object level.

Because the values among objects that are configured from the class may cover a wide range, e.g. an Alarm high for one may be 500, for another may be 28,000, determining the requirements during planning will make those requirements obvious.

Example

Feature	Required for
Device Point Alarms	Alarm High limits Alarm low limits
Device Points	Input value Output value Temperature Tank level
Virtual Points	Average input flow rate Average output flow rate

More information

Step 1. Plan a class.

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