Tag Archives: PLC Programming

PLC Delay‑on‑Start and Delay‑on‑Stop Programming Guide

PLC

Introduction For many beginners learning PLC programming, timers represent one of the first major hurdles to overcome. Delay‑on‑Start and Delay‑on‑Stop are two of the most fundamental and frequently‑used control logics in industrial automation. A wide variety of real‑world equipment relies on these functions, including blowers, water pumps, conveyor belts and many other types of machinery. […]

What Is a Rising Edge in PLC Programming? Why Do PLC Buttons Use Rising Edge Detection?

What Is a Rising Edge in PLC Programming

If you are new to PLC programming, you may have encountered terms such as Rising Edge, Positive Edge, One-Shot, or Pulse Detection. At first glance, they may seem complicated. Why can’t a PLC simply detect whether a button is ON or OFF? Why do many PLC programs need a special rising-edge instruction when a push […]