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
1. Design Philosophy of Modbus Protocol Modbus devices communicate using a master-slave (client-server) architecture, where only one device (the master/client) can initiate transactions (referred to as queries). Other devices (slave/server) respond by providing requested data or performing operations as requested in the query. Slaves are any peripheral devices (I/O converters, valves, network drives, or other … 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
Industrial Automation Maintenance Manual: Modbus TCP Communication Troubleshooting and Optimization Guide 0 ▲ 90% of Engineers Overlook Modbus TCP Communication Risks: Timeout Settings and Message Boundary Handling Dear friends, I am Wang, and I have been working in industrial control for over ten years. Today, let’s talk about the Modbus TCP protocol, which seems simple … Read more
Introduction Balancing industrial development with environmental protection is a critical challenge for achieving sustainable development, particularly in developing countries. While industrial growth drives economic progress and job creation, it can also lead to resource depletion and environmental degradation if not managed responsibly. Effective environmental policies and technical standards are essential in ensuring that industrial transformation … Read more
GDB (GNU Debugger) – A Powerful Tool for Database Kernel Developers Welcome to the world of database kernel development! Today, we will learn about a very important tool that acts like a doctor’s stethoscope or a detective’s magnifying glass, helping us delve into the internal workings of programs and uncover hidden bugs. This tool is … Read more
Are you still struggling with complex low-level code and cumbersome configurations in IoT development? Here, we introduce an open-source embedded C++ framework that can significantly enhance your development efficiency—Sming! It allows you to easily build high-performance IoT applications and quickly bring your ideas to life. 1. Sming: An Efficient and Convenient Embedded C++ Framework Sming … Read more
When FreeRTOS Meets Modern C++ As the leading embedded real-time operating system kernel in the global market, FreeRTOS supports over 40 processor architectures under the MIT open-source license. Its lightweight kernel and mature TCP/IP stack have become the preferred choice for IoT devices. The emergence of the FreeRTOScpp project injects modern C++ genes into this … Read more
Follow and star our public account for exciting content Source: Embedded Linux The questions are as follows: I am currently 25 years old, graduated from a non-211 university. I work in Shenzhen, doing embedded development, and my salary is currently average. After reading many blogs written by seniors, I find them great. I have some … Read more
Low Power Design in C++ Embedded Development In modern embedded systems, low power design is a crucial topic. With the proliferation of IoT devices and wearables, effectively managing power consumption has become a challenge that developers must face. This article will introduce some low power design strategies in C++ embedded development and provide corresponding code … Read more