Answer / Shyam Singh Bisht

Programmable Logic Controllers (PLCs) and Distributed Control Systems (DCS) are both industrial control systems used to automate processes, but they differ in architecture, functionality, and application areas. PLCs have a modular design with input/output (I/O) modules connected to a central processing unit (CPU). They are simple and cost-effective, making them suitable for small to medium-sized applications. DCS, on the other hand, has a distributed architecture with multiple intelligent controllers connected through a communication network. DCS is more complex, flexible, and expensive, making it suitable for large-scale, critical process control applications.

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