Understanding the layers of the Purdue model
You might have already obtained an idea of the Purdue model. Let’s delve a little deeper into the layers it has and how it contributes to Industry 4.0.
Figure 2.2 gives us a clear representation of the Purdue model:
Figure 2.2 – Layers of the Purdue model
Let us look at these layers in detail:
- Layer 0 – Bus Network: This involves physical components such as sensors, actuators, and motor pump valves at the end of the cycle to produce the final product. Think of smart manufacturing—smart factories assembling products—as an example. These are called intelligent devices.
- Layer 1 – Controllers: The logic used to send commands to the devices at Layer 0 is from systems at Layer 1. Examples include Programmable Logic Controllers (PLCs), Remote Terminal Units (RTUs), Supervisory Control and Data Acquisition (SCADA), and Distributed Control Systems (DCSs). Control systems...
