What is Purdue Model ?

The Purdue model, also known as the Purdue Enterprise Reference Architecture (PERA), is a reference architecture for industrial automation systems. It was developed in the late 1980s by researchers at Purdue University as a way to organize the different levels of an industrial control system into a hierarchical structure.

The Purdue model consists of five levels, each representing a different aspect of the industrial control system:
Level 0: Physical processes - This level represents the physical equipment and processes that are being controlled, such as sensors, actuators, and machinery.
Level 1: Basic control - This level includes the devices and systems that directly control the physical processes, such as programmable logic controllers (PLCs) and distributed control systems (DCSs).
Level 2: Supervisory control - This level includes the systems that monitor and control multiple processes, such as manufacturing execution systems (MES) and supervisory control and data acquisition (SCADA) systems.
Level 3: Production planning - This level includes the systems that plan and schedule production activities, such as enterprise resource planning (ERP) systems.
Level 4: Enterprise business planning - This level includes the business systems that support the overall goals and objectives of the organization, such as customer relationship management (CRM) and financial management systems.

The Purdue model provides a framework for organizing and integrating the various components of an industrial control system, from the physical processes to the enterprise-level business systems. It has been widely adopted as a reference architecture for industrial automation systems, and is used by many organizations and vendors in the industry.

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