What was invented to ease the transition for technicians programming PLCs, while they replaced mechanical relay logic systems?

Ladder Logic was specifically developed to facilitate the transition from mechanical relay logic systems to programmable logic controllers (PLCs). This programming language mimics the layout of electrical relay diagrams, which makes it intuitive for technicians who were already familiar with wiring and relay logic. The visual representation resembles a ladder, where the rungs represent the various control processes, allowing users to understand and visualize the operation of the system easily.

In contrast to the complexity of traditional programming methods, Ladder Logic offers a more accessible approach for those accustomed to working with electrical circuits, making it a valuable tool for simplifying the programming of automation and control processes. This design helps in reducing the learning curve for technicians and enhances their productivity by providing a familiar framework for programming PLCs.