today’s unseen hero: The PLC

Today we’re going to give you some insight into the PLC, today’s unseen hero controlling a massive range of equipment.

A PLC, or better said Programmable logic controller, is a digital computer used for industrial automation. It is designed for electromechanical processes, such as control of machinery on factory assembly lines, amusement rides, or lighting fixtures. Unlike general-purpose computers, the PLC is designed for multiple inputs and output arrangements, extended temperature ranges, immunity to electrical noise, and resistance to vibration and impact. A user can program the PLC to perform a series or sequence of events.

In the 1960’s Programmable Logic Controllers were first developed to replace relays and relay control systems. Nowadays in some cases people replaced PLC’s with computers… However, PLCs are still very much in use in all sorts of industries, and it’s likely that they will remain there for quite some time.

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One thought on “today’s unseen hero: The PLC

  1. We also have a course “Control theory”, one of the main topic about that is PLC. But be honestly I didn’t do quit well on that course, and my class mate also think it is difficult, at least it’s not easy. Then I have a question, why would such a “difficult” system still be used world wide? Why can’t we develop a much easier way of control a machine?

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