Distributed control systems (DCS) evolved out of control systems for facilities, but their scope can be difficult to fully understand. This article explores the role of a DCS and how it fits in with PLCs and PACs. The early days of machine control centers were limited by the fairly basic capabilities of the CPUs inside … Read more
In the world of automation, PLCs and PACs are often at the center of the action. But where did these machines come from, what are the functional differences between the two, and what applications are they best suited for? In the 1960s, computers were ruggedized for industrial environments where they were implemented to automate simple … Read more
A brief overview of controllers through history and an analysis of factors to consider when deciding which one to use. A Historical Context PLCs were initially introduced in the 1960s and early 1970s. The goal back then was to replace relay switch cabinets and large masses of wires with a more compact and efficient solution. Later … Read more