As shown in the illustrated block diagram...

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Question 1 of 205eccefa5bacbc34ba4d48850

As shown in the illustrated block diagram for a programmable logic controller system, what functional component is used to receive and transmit data to and from other PLCs on the network? See illustration EL-0225.

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🔍 Key Concepts

• Look closely at the labels above each module in the illustrated PLC rack, especially at the far right side. • Distinguish between modules that handle field I/O signals (DC/AC/analog inputs and outputs) and the module that handles network data. • Remember that other PLCs on the network do not connect through the same hardware used for pushbuttons, sensors, and actuators.

💭 Think About

• Which module label in the illustration specifically refers to data or communications rather than inputs or outputs? • Do other PLCs on a network behave more like field devices (sensors/actuators) or like data partners, and which module is designed for that purpose? • If you removed the DC/AC I/O modules, could PLCs still talk to each other on the network? Which module would still make that possible?

✅ Before You Answer

• Verify which module in the diagram is actually labeled with the word communications or data communications. • Confirm that DC, AC, and analog input/output modules are connected to field devices, not to other PLC processors. • Make sure the component you choose is not the processor module itself, but the module that specifically interfaces the PLC rack to the network.

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