Instrument Fitter Practice Test 2025 – Comprehensive Exam Prep

In industrial instrumentation, the term PLC stands for Programmable Logic Controller. This is a specialized digital computer used for automation of industrial processes. Unlike traditional systems, a PLC can be programmed to perform a wide variety of tasks, allowing for flexibility in manufacturing and control processes. They are designed to withstand harsh industrial environments, operate in real time, and offer various communication interfaces to integrate with other machinery and systems.

Programmable Logic Controllers are characterized by their ability to be configured and reconfigured according to the specific needs of an application, making them essential tools in modern manufacturing and automation. Their use increases efficiency and reduces the complexity of control circuits compared to older relay-based systems, enabling industries to implement more sophisticated control schemes easily.