Greater Than or Equal To (≥) in PLC Programming
Greater Than or Equal To (≥) If MW6 is greater than or equal to MW256, then set M0.7.
ABB PLC
S7-200 SMART: Siemens Entry-Level PLC Quick Control Solutions for Small Equipment
I remember once visiting a food factory where the owner spent over twenty thousand on a packaging machine. Suddenly, it stopped working! When I opened the electrical cabinet, the indicator lights on the Siemens S7-200 SMART were flashing like it was New Year’s. The operator was as anxious as a cat on a hot tin … Read more
Key Points of Schneider PLC Application in Railway Signal Systems: Ensuring Train Safety
Key Points of Schneider PLC Application in Railway Signal Systems: Ensuring Train Safety Hello everyone, I am Engineer Liu. Recently, I have received many inquiries from friends regarding railway signal systems, so today I will discuss the specific applications of Schneider PLC in this field. 1. Core Requirements of Signal Systems When it comes to … Read more
PLC Control Technology for Industrial Fire Suppression Systems
The industrial fire suppression system is an important guarantee for production safety. The intelligent control solution based on Siemens PLC can achieve rapid response and precise fire extinguishing, effectively reducing fire risks. 1. Hardware Configuration 1.1. PLC and Expansion Module Selection The core control of the industrial fire suppression system adopts the Siemens S7-1200 series … Read more
S7-1500: Automation Control of Sand and Gravel Production Line
Today, let’s talk about the automation control of sand and gravel production lines. I’ve been working on this for over a decade, and I’ve disassembled and assembled at least eighty production lines. Although the sand and gravel line looks simple, there are many nuances to fully automate it! Using the Siemens S7-1500 PLC (Programmable Logic … Read more
Learn in 3 Minutes! Implementing PLC Recipe Functionality to Easily Handle Multi-Product Production Switches!
Learn in 3 Minutes! Implementing PLC Recipe Functionality to Easily Handle Multi-Product Production Switches! Do you remember that frustrating Monday morning when I first started my career? The factory received a new order with completely different product specifications, and the site supervisor was as anxious as a cat on a hot tin roof, while I—a … Read more
Siemens and AB PLC: The Fault Diagnosis System Used by 98% of Engineers in the USA
Introduction Hello everyone, I am Engineer Li. I have been working in the automation industry for 15 years, mainly focusing on the design and maintenance of industrial automation control systems. Over the years, I have visited many factories and dealt with various PLC faults. From initially being flustered to now handling issues calmly, I have … Read more
Choosing Communication Interface Standards for PLC Hardware: Making Device Interconnection More Convenient!
Introduction Hello everyone! Today, I want to talk about a topic that many automation engineers both love and hate — the selection of PLC communication interfaces.Don’t worry, I will explain the advantages and disadvantages of various communication interfaces in the most relatable way.Trust me, choosing the right communication standard can improve your device interconnection efficiency … Read more
Methods for Implementing Safety Design in Motion Control Using PLC Function Block Diagrams
As I was finishing my morning tea, a piercing alarm rang out from the workshop. Rushing over, I found that the new employee, Xiao Li, had failed to set safety limits while debugging the conveyor belt, causing the robotic arm to crash into a barrier. This scene reminded me of a similar mistake I made … Read more
PLC Playground Crowd Monitoring System Training Steps
# **PLC Playground Crowd Monitoring System Training Steps**## **1. Training Preparation Phase**### 1. **Clarify Training Objectives**- Design a crowd counting system based on PLC- Implement functions for counting entries and exits, over-limit alarms, and data display### 2. **Equipment and Tools Preparation**| Equipment/Tool | Quantity | Purpose ||———–|——|——|| PLC Controller (e.g., Siemens S7-1200) | 1 unit … Read more