Which PLC component is directly responsible for turning field devices on or off?

Study for the Programmable Logic Controller (PLC) Test. Prepare with flashcards and multiple choice questions, each question provides hints and explanations. Get ready for your exam!

Multiple Choice

Which PLC component is directly responsible for turning field devices on or off?

Explanation:
The output module is what directly turns field devices on or off. In a PLC, the input module gathers signals from sensors, the CPU runs the program logic, and then the output module drives the actuators by applying or removing power to them. This is how a relay, contactor, motor starter, lamp, or valve is energized or de-energized to achieve the desired action. The power supply simply provides the necessary electrical power to the system, while the CPU handles decision-making and the input module provides the sensed data.

The output module is what directly turns field devices on or off. In a PLC, the input module gathers signals from sensors, the CPU runs the program logic, and then the output module drives the actuators by applying or removing power to them. This is how a relay, contactor, motor starter, lamp, or valve is energized or de-energized to achieve the desired action. The power supply simply provides the necessary electrical power to the system, while the CPU handles decision-making and the input module provides the sensed data.

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