Which statement best describes the PLR as it relates to programmable controllers?

Which statement best describes the PLR as it relates to programmable controllers?

• A. It is a type of programmable controller
• B. It is a type of analog sensor
• C. It is a type of mechanical relay
• D. It is a type of CPU

Answer: (A)

PLR stands for Programmable Logic Relay, a compact device that combines programmable logic with relay-type outputs. It’s designed for simple automation tasks where you program logic to control outputs that switch devices on and off. Because it integrates a processor, programming logic, and I/O with relay outputs, it’s best described as a type of programmable controller. It isn’t just an analog sensor, a mechanical relay, or a CPU by itself—the PLR provides the programmable control capability along with the relay outputs in one unit.

PLR stands for Programmable Logic Relay, a compact device that combines programmable logic with relay-type outputs. It’s designed for simple automation tasks where you program logic to control outputs that switch devices on and off. Because it integrates a processor, programming logic, and I/O with relay outputs, it’s best described as a type of programmable controller. It isn’t just an analog sensor, a mechanical relay, or a CPU by itself—the PLR provides the programmable control capability along with the relay outputs in one unit.