PLC Terms Quiz

What is an Actuator?

• A device that converts electrical signals into mechanical movement.

• A unique location in memory where data is stored.

• Signal inputs/outputs that vary continuously.

• The smallest unit of data in computing.

What does Address refer to?

• A unique location in memory where data is stored.

• Logic based on binary variables.

• A system that manages other devices.

• The brain of the PLC.

What is Analog Input/Output?

• Signal inputs/outputs that vary continuously.

• Signals that are either ON or OFF.

• A portion of PLC memory.

• A device that converts motion to an electrical signal.

What is a Bit?

• The smallest unit of data in computing.

• A graphical interface for operators.

• A communication protocol.

• A function block that counts time.

What is Boolean Logic?

• Logic based on binary variables.

• A system that collects data from PLCs.

• A programming language.

• A safety feature in PLC.

What is a Control System?

• A system that manages, commands, directs, or regulates the behavior of other devices.

• A digital computer used for automation.

• A module that receives signals from sensors.

• A symbolic name for a value stored in memory.

What is a CPU?

• The brain of the PLC.

• A communication protocol.

• A device that detects changes.

• An electrically operated switch.

What is a Data Table?

• A portion of PLC memory where data is stored.

• A function that counts time.

• A symbolic name for a memory location.

• A graphical interface for operators.

What is Digital Input/Output?

• Signals that are either ON or OFF.

• A device that converts motion.

• A communication protocol.

• A system that collects data.

What does Download mean?

• The process of sending a program from a computer to a PLC.

• The cycle in which the PLC reads inputs.

• A safety feature to ensure the PLC is operating properly.

• A symbolic name for a value stored in memory.