Programmable Logic Controllers (PLCs) are the bedrock of modern industrial automation. Before the advent of the PLC, manufacturing processes were controlled by relay logic—physically wired panels that were difficult to modify and troubleshoot. John W. Webb’s text addresses the technology that replaced these rigid systems.
The author then delves into the programming languages used in PLCs, including Ladder Logic, Function Block Diagram (FBD), and Sequential Function Chart (SFC). He provides numerous examples and illustrations to help readers understand the syntax and semantics of each language. Programmable Logic Controllers (PLCs) are the bedrock of
Basic DC circuits (Ohm’s law, relay coils, contacts). No prior programming required. including Ladder Logic
A: Yes. Look for "Programmable Logic Controllers: Lab Manual" by Frank Lamb. It pairs perfectly with Webb’s principles. Function Block Diagram (FBD)