The PLC Run Mode of operation is selected to execute the user program. Which option corresponds to this mode?

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

The PLC Run Mode of operation is selected to execute the user program. Which option corresponds to this mode?

Explanation:
Run mode is the mode used when the PLC is executing the user program and performing the control scan. In this mode the CPU repeatedly reads inputs, evaluates the ladder logic (or other language) of the user program, and updates the outputs. This is the normal operation state for controlling the process. Stop mode halts the program and stops I/O updates, used for safe maintenance. Program mode is for editing, downloading, or uploading the program, during which the user logic isn’t actively running. Test mode is for debugging or diagnostic checks and typically isn’t used for standard operation.

Run mode is the mode used when the PLC is executing the user program and performing the control scan. In this mode the CPU repeatedly reads inputs, evaluates the ladder logic (or other language) of the user program, and updates the outputs. This is the normal operation state for controlling the process.

Stop mode halts the program and stops I/O updates, used for safe maintenance. Program mode is for editing, downloading, or uploading the program, during which the user logic isn’t actively running. Test mode is for debugging or diagnostic checks and typically isn’t used for standard operation.

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