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
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
NEWS Click the blue text to follow usNEWS TODAY Hello everyone, this is The Programmer’s Hair Loss Guide! CMake Executable Not Found? A Comprehensive Analysis of Docker Image Runtime Issues Introduction When building C++ projects using Docker containers, have you encountered the error <span>cmake exe file is not found</span>? This article will provide a detailed … Read more