PLC พื้นฐาน

What is the primary function of a Programmable Logic Controller (PLC)?

• To store large amounts of data for industrial applications.

• To control and automate processes, typically in industrial settings.

• To provide internet connectivity for factory equipment.

• To design complex mechanical parts.

What is a significant advantage of using a PLC for control circuit modifications compared to traditional wiring?

• PLCs require more physical rewiring for every change.

• Changes are made in the PLC project software, eliminating the need to rewire the control cabinet.

• PLCs are only suitable for simple control circuits, not complex modifications.

• Modifications can only be done by replacing the entire PLC unit.

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How does a PLC simplify complex motor control tasks like staggering start times or defining runtimes?

• It requires extensive additional hardware for each motor.

• It allows for wiring everything directly into the PLC and adding contacts and timers in the ladder code.

• It necessitates manual adjustment of each motor's physical timer.

• It is not designed to handle such complex timing sequences.

What is a key characteristic of PLCs regarding their lifespan and adaptability?

• They have a short lifespan and are difficult to expand.

• They are designed for rigorous industrial environments, offering superior longevity and expandability through additional modules.

• They are typically replaced every few years due to rapid technological obsolescence.

• Their programming software is proprietary and not supported for long periods.