Basic Structure of a PLC

What does PLC stand for?

• Personal Logic Controller
• Programmable Logic Controller
• Professional Logic Controller
• Portable Logic Controller

Which component provides the CPU and output module with electrical power?

• Sensor
• Actuator
• Power supply
• Timer

Where is the firmware of a PLC stored?

• RAM
• Hard drive
• ROM
• CPU

Which functional block performs arithmetic and logical operations in a PLC?

• Counter
• Timer
• CPU
• Sensor

What type of signal is used in a PLC to represent the amount of light detected by a light sensor?

• Digital
• Binary
• Analogue
• Decimal

What is the role of an actuator in a PLC system?

• To process input signals
• To provide electrical power
• To receive signals and perform actions
• To store user programs

Which memory type is used to store the user program in a PLC?

• ROM
• RAM
• Hard drive
• Flash drive