My primary job is as an automotive electronics engineer. Previously, I have been working on the software side. Recently, I started learning about hardware. Here, I will document my learning content. Starting with the MCU collecting sensor data. After studying the pin configuration of the MCU, I decided to begin with communication methods. I²C, UART, … Read more
Mitsubishi PLC Fundamentals of Applications 1. Common Series of Mitsubishi PLC 1. FX Series Features: Compact, economical, suitable for simple control (e.g., FX3U, FX5U). Applications: Small equipment, assembly line control, simple logic control. 2. Q Series Features: Modular design, strong expandability, suitable for complex systems. Applications: Large production lines, multi-axis motion control, networked systems. 3. … Read more
The third National Skills Competition continues the practices of the previous two editions, setting up World Skills selection projects and selected national competition projects, totaling 106 items. This issue introduces the IoT Installation and Debugging project. IoT Installation and Debugging refers to the selection of appropriate communication protocols for typical industry application scenarios, using specialized … Read more
Features TCP HTTP SSE WebSocket Communication Direction Bidirectional Request-Response Unidirectional (Server → Client) Bidirectional Underlying Protocol IP TCP HTTP TCP (Initial handshake is HTTP) Protocol Layer Transport Layer Application Layer Application Layer Application Layer Core Advantages Reliable, Stable Simple, Stateless, General Lightweight, Auto-Reconnect True Duplex, Low Latency Main Disadvantages Complex Protocol, High Overhead Header Redundancy, … Read more
Title: What is the Purpose of Bus Chips? Understand It with This Article First Paragraph: In the embedded field, devices in industries such as fire protection, intelligent buildings, and industrial control are often widely distributed, with complex wiring and frequent voltage fluctuations. Traditional RS-485 faces constraints such as polarity, cable length, and grounding when expanding … Read more
Further enhance the digital management system for device management in terms of integrity, usability, and maintainability, focusing on plugin management, database, device communication, configuration, logging, and main window status for functional enhancements. Below is the detailed design process: Enhancing Plugin Management Functionality Design Objective: Achieve lifecycle management of plugins (start/stop), enable/disable, dependency checks, and version … Read more
In the field of power automation, inverters serve as the core devices for motor control, and the compatibility issues of their communication protocols have long troubled engineers. When the 15-meter transmission distance limitation of RS232 collides with the 1200-meter long-distance communication requirements of ProfiBus, and the 9600bps serial port rate starkly contrasts with ProfiBus’s 12Mbps … Read more
“The Path of an Excellent Engineer in Three Stages” 1. Basic Stage: Siemens TIA Portal PLC Technology. 2. Intermediate Stage: TIA Portal and C# Advanced Language Technology. 3. Advanced Stage: Standardized Programming Methods for PLCs. The Path of Standardization! Modbus communication is a very open and universal protocol, and it is one of the most … Read more
Communication between electronic devices is like communication between humans; both parties need to speak the same language. In electronic products, these languages are called communication protocols. Previously, I shared articles on SPI, UART, and I2C communication separately; this article compares them. Serial vs Parallel Electronic devices communicate by sending data bits. A bit is binary … Read more
(In the control room of a food packaging workshop, a small A frowns at the modules in the PLC control cabinet, while Zhang, holding a multimeter, approaches, accompanied by the sound of the packaging machine in operation.) Small A (pointing at the modules in the control cabinet): Zhang, when we learned about PLCs, we always … Read more