About the equipment model

Equipment is one of the important elements of the three foundational ISA-95 models, consisting of Personnel, Equipment, and Materials.

You can represent and define the pieces of equipment in your process with the use of plant hierarchy items. Each of these items has a unique EquipmentID property and can be assigned to an equipment class.

• Enterprise Folder

• Site Folder

• Area Folder

• Work Centers

• Work Units

Equipment model

The equipment model is a hierarchical representation of the process or plant layout. We recommend that you follow the guidelines set forth in the ANSI/ISA–95 Enterprise-Control System Integration standard. The standard is about reducing cost and increasing reliability and interoperability of interfacing enterprise domain to the control domain.

In addition to the equipment hierarchy, the ANSI/ISA–95 standard states that the equipment model also has a concept called equipment class and each class can have one or more custom properties. A specific piece of equipment can belong to an equipment class. Through this association, each equipment instance has the same set of the custom properties.

Example

For example, you configure an equipment class called Conveyor. The Conveyor class has two custom properties: Speed and Target. Then, you configure five specific conveyors, and associate them with the Conveyor class. As a result of the association, each of the specific conveyors has two custom properties: Speed and Target.

Related topics

• About the material model

• About the personnel model

• About the plant hierarchy

• Add and configure equipment classes

• What are contextualized properties?