As shown in the illustrated block diagram...

Question 1 of 270705eccefa5bacbc34ba4d4884f

As shown in the illustrated block diagram for a programmable logic controller system, in what functional component is the program developed and used to transfer the program to the processor module of the PLC? See illustration EL-0225.

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Question 1 of 27070

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🔍 Key Concepts

• Programmable Logic Controller (PLC) architecture – what each module or block in the diagram is responsible for • Difference between where the logic program is CREATED vs where it is EXECUTED • Role of a programming device/unit compared with I/O, PID, and communications modules

💭 Think About

• Look at the diagram and trace the path from the device where the ladder logic is drawn to the main rack – what is that external device called? • Ask yourself: which module actually RUNS the control program, and which separate component is used by the technician to WRITE and DOWNLOAD that program? • For each answer choice, decide: is this mainly for I/O, control tuning, communications, or for creating and loading the program?

✅ Before You Answer

• Identify on the illustration which labeled component is shown as a computer/terminal connected by a cable to the PLC rack • Confirm that the component you choose is described in manuals as being used to develop/edit PLC programs • Make sure you do NOT pick a module whose primary purpose is process control (PID) or network/data communications, even though they may also handle data