What are the three core network levels in PLC communication?

The three core network levels in PLC communication are correctly identified as Enterprise, Automation, and Field Device. This structure reflects the hierarchical nature of the communication systems used in industrial automation.

At the Enterprise level, overall business operations are managed, enabling integration between business processes and automation systems. This encompasses management systems like ERP (Enterprise Resource Planning) that track corporate resources and facilitate decision-making.

The Automation level focuses on the management of processes and systems within manufacturing and production environments. This area includes PLCs (Programmable Logic Controllers) that execute control strategies and coordinate the operation of machinery and processes.

Finally, the Field Device level encompasses the physical devices that interact with the process, such as sensors, actuators, and other components directly engaged in operations. These devices provide real-time data to the PLCs and are essential for feedback control mechanisms.

This hierarchy ensures clear communication pathways, from high-level business objectives down to the granular control of devices, which is essential for achieving efficient and effective process automation.