For more exciting content, click to follow “PLC Enthusiasts” The Siemens S7-1200 can communicate via Modbus RTU through communication modules, with the PLC serving as the controller, typically acting as the Modbus master. When functioning as a Modbus master, it generally polls parameters from multiple slave devices. This article introduces the timed polling program for … Read more
Click on the top “Technical Training” to select “Pinned Public Account” Over 110,000 industrial control professionals follow this WeChat platform: Technical sharing, learning exchange, industrial control videos Recently, many students have been asking about the MODBUS communication of the S7-200 series PLC, so today I will write an article to discuss how to use the … Read more
How to determineif a Modbus TCPconnection is established? Answer: To performModbus TCPcommunication, a connection must be established. S7-200 SMART CPUas aModbus TCPclient: You can determine the connection status using the Modbus TCP Client instruction’s symbol table parameter mConnected, as shown in Figure 1. If mConnected=1, it indicates that the connection has been established, while mConnected=0 … Read more
Today, I would like to share a practical case involving a water level control project using PLC, inverter, and touch screen. Let’s take a look at the entire process, which you can save for future reference! ● Project Description ● EM235 Module ● Project Implementation ● Touch Screen Monitoring 1. Project Description 1. Project Control … Read more
Hello everyone! Today, let’s talk about some essential tips in microcontroller and PLC programming that can help you boost your efficiency, allowing you to say goodbye to the 996 work culture and easily tackle your programming tasks! 1. Efficiency Improvement Techniques for Microcontrollers (1) Bit Manipulation: Programming Techniques to Make Microcontrollers Run Faster Basic Concept … Read more
PLC is a new generation of general industrial control devices based on microprocessors, integrating computer technology, automatic control technology, and communication technology. It uses user-oriented “natural language” programming for control processes, making it suitable for industrial environments, easy to understand, user-friendly, and highly reliable.PLC is developed based on relay sequential control and is a general … Read more
Anyone engaged in electrical work knows that the automation control provided by PLCs is indispensable for industrial production and technological development. Broadly speaking, a PLC can be understood as a centralized relay extension control cabinet. In practical production applications, PLCs significantly reduce the costs of industrial control and enhance centralized management and automatic control of … Read more
It is well known that industrial production and technological development rely heavily on the automation control provided by PLCs. A PLC can be broadly understood as a centralized relay extension control cabinet. In practical production applications, PLCs significantly reduce the costs of industrial control and enhance centralized management and automatic control of equipment. To master … Read more
Click on the above “ Technical Training ” and select “Pin to Top Public Account” Over 140,000 industrial control professionals follow this WeChat platform: technical sharing, learning exchange, industrial control videos 1. Basic Introduction to S7-1200 Storage Card The storage card used by the S7-1200 CPU is an SD card, which has the following four … Read more
Domestic PLCs cannot replace foreign brands like Siemens and Mitsubishi not because of their performance and functionality, but fundamentally because brands like Siemens have stood the test of time and earned the trust and reliance of a large customer base through long-term practice and engineering. Factors such as brand, ecosystem, user habits, application technology environment, … Read more