What is the difference between a Programmable Logic Controller (PLC) and a Distributed Control System (DCS), and in what scenarios are each typically used?

Question

Accepted Answer

PLC is used for discrete control of machines, while DCS is used for continuous control of processes.

PLC is typically used for controlling individual machines or processes in manufacturing, automotive, and packaging industries.
DCS is commonly used in industries such as oil and gas, chemical, and power generation for controlling continuous processes.
PLCs are more cost-effective for small to medium-sized applications, while DCSs are better suited for large-scale operations.
PLCs are easier to program and troubleshoot compared to DCSs, which are designed for complex and interconnected systems.
PLCs are decentralized control systems, while DCSs are centralized control systems with multiple controllers communicating with each other.

What is the difference between a Programmable Logic Controller (PLC) and a Distributed Control System (DCS), and in what scenarios are each typically used?

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