Introduction In this section, we will learn how to view files. In fact, we have used these commands multiple times in previous tutorials, so many of you may already be very familiar with them. In Windows, we know that both txt text files and word docx files have corresponding software to open and view them. … Read more
This article is approximately 4,500 words long, recommended for saving and reading. Author | Engineer Xiao Mo Produced by | Automotive Electronics and Software Table of Contents 1. Introduction 2. Basic Theory of SPI Protocol 3. Hardware Design Solutions 4. Software Architecture Design 5. Driver Implementation 6. Summary 1. Introduction 1.1 Document Background The Serial … Read more
In the workshop, you’re in a hurry to debug the program, but the PLC and computer just won’t connect; despite following the wiring tutorial, the software keeps reporting “communication failure”; as a beginner, you’re at a loss with a bunch of wires, just waiting for a technician — does this sound like your experience when … Read more
In non-standard automation projects, Modbus communication failures are one of the most troublesome issues for engineers. Sudden device disconnections, abnormal data transmission, communication timeouts… These problems not only affect production efficiency but can also lead to the shutdown of the entire production line. After years of practical experience, we have summarized this 5-minute quick troubleshooting … Read more
Follow “Embedded Miscellany” and select “Star the Official Account” to progress together! Source | CSDN For many embedded projects, system designers tend to choose a Real-Time Operating System (RTOS). But is an RTOS always necessary? The answer depends on the specific application, so understanding what goals we aim to achieve is key to determining whether … Read more
In the wave of smart manufacturing and Industry 4.0, the HMI (Human-Machine Interface) serves as the “bridge” between equipment and operators, undertaking core functions such as real-time data display, equipment monitoring, and interactive control. However, traditional Profibus bus connections often suffer from issues such as electromagnetic interference and transmission distance limitations, leading to screen freezes, … Read more
1. Basic Concepts of UART UART (Universal Asynchronous Receiver/Transmitter) is a universal asynchronous transceiver with the following characteristics: Asynchronous Communication: No clock line is required, only TX (transmit) and RX (receive) data lines are needed. Full-Duplex Transmission: Supports simultaneous data transmission and reception. Flexible Configuration: Baud rate, data bits, parity bits, and stop bits can … Read more
Project Overview This project implements a desktop client application based on the Qt framework for communication with an MQTT server. Through this application, users can connect to the MQTT server, subscribe to and publish topic messages, and receive and process messages from the server. The project utilizes the <span>QMqttClient</span> class to implement MQTT protocol functionality, … Read more
When wiring in industrial settings, the 9-pin interface of the PROFIBUS connector is a familiar sight for engineers—pins 3 and 8 are responsible for data transmission, which is common knowledge. But have you noticed that pins 2 and 7 are labeled for 24V power output? What are they used for? This easily overlooked detail is … Read more
(Thanks to everyone for your likes and appreciation. If this article resonates with you, please “like” and “recommend” it, thank you all!) Task Introduction In the production processes of enterprises, various intelligent production devices operate under the unified control and management of automated intelligent control units, forming an industrial-grade network working mode characterized by interconnection … Read more