PLC

Profinet is an advanced Industrial Ethernet standard widely used in automation systems to ensure reliable, real-time communication between various devices like controllers, sensors, actuators, and computers. It enables seamless integration of industrial networks by connecting different field devices and enabling high-speed data transfer. Profinet achieves this through three distinct communication modes: NRT (Non-Real-Time), RT (Real-Time), […]

1. Self-Locking 1.1 Definition Self-locking refers to a control mechanism where a circuit element (e.g., a button or relay) maintains its state after activation, even when the initial trigger is released. 1.2 Working Principle Self-locking is typically achieved by connecting a normally open auxiliary contact of a relay in parallel with the start button. When

In today’s industrial automation landscape, both Motion Controllers and PLCs (Programmable Logic Controllers) play critical roles. However, they are designed for very different purposes. Understanding the key differences between the two can help system integrators, engineers, and procurement professionals make smarter control system decisions. 🎯 What Is a PLC? A PLC is a digital computer

In industrial operations, safety is like a sword of Damocles hanging overhead — any negligence could trigger catastrophic consequences. One key defense mechanism widely adopted across industries is SIL, or Safety Integrity Level. But what exactly is SIL, and why is it so crucial? This article offers a detailed exploration of SIL’s definition, standards, applications,

DCS, or Distributed Control System, is also referred to as a decentralized control system in China’s automation industry. A DCS is a modern control system based on microprocessors. It distributes control in a decentralized manner, focusing on hazard control while centralizing operations and management. This advanced system integrates computer technology, communication technology, CRT (display) technology,

In the world of industrial automation, Programmable Logic Controllers (PLCs) play a vital role in managing real-time operations. One of the most essential yet often overlooked aspects of PLC operation is the scan cycle. Understanding how the PLC scan cycle works can help engineers optimize system performance and ensure reliable, predictable control. 🔄 What Is

Pneumatic systems are widely used in various industries for automation and process control due to their reliability, simplicity, and efficiency. To ensure the optimal performance of these systems, it’s important to condition the air used to drive pneumatic actuators and other devices. This is where FRL units (Filter-Regulator-Lubricator) come into play. The two most common

In programmable logic controller (PLC) applications, discrete logic control refers to the processing of binary signals—on/off, true/false—based on specific logical relationships. This document outlines three commonly used programming approaches: Basic Logic Design, Advanced Logic Design, and Engineering Design Methods. 1. Basic Logic Design Method The basic logic design method uses simple logic operations (AND, OR,

In automatic control systems, achieving bumpless transfer is crucial. Bumpless transfer refers to the ability to switch between manual and automatic modes without introducing any disturbances into the process. Typically, switching from automatic to manual mode is straightforward. However, switching from manual to automatic mode is more complex and demands careful design. 1. Bumpless Transfer

1. Introduction In industrial process control, disturbances such as sudden changes in input or load conditions can significantly affect system stability. While PID controllers are widely used for maintaining process setpoints, combining them with feedforward control can enhance responsiveness and reduce output fluctuations. This paper discusses how feedforward and PID control can work together, using