What is a PLC?

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A PROGRAMMABLE LOGIC CONTROLLER (PLC) is an industrial computer control system that continuously monitors the state of input devices and makes decisions based upon a custom program to control the state of output devices.

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PLCs are solid-state control systems with sturdy, robust construction and a suite of special functionalities. Some of these functionalities include an intuitive programming interface, I/O control, three modes (PID) control, arithmetic, counting and timing mechanisms and sequential control.

Almost any production line, machine function, or process can be greatly enhanced using this type of control system. However, the biggest benefit in using a PLC is the ability to change and replicate the operation or process while collecting and communicating vital information.

Another advantage of a PLC system is that it is modular. That is, you can mix and match the types of Input and Output devices to best suit your application.