Hello everyone, I am Xiao Zhi. Recently, I have received many messages from friends asking about communication issues, so today we will discuss PLC network faults. A few months ago, I went to a beverage factory to resolve a communication fault, and the project manager was so anxious that he was wringing his hands: “Lao … Read more
An intelligent sensor network acts like the nervous system of a factory, while IO-Link technology serves as the “translator” of this system. Traditional sensors only communicate “on” and “off,” whereas intelligent sensors can provide detailed information—not just whether an object is present, but also how far away it is, how hot it is, and even … Read more
1. Overview PROFIBUS-DP, where DP stands for Decentralized Periphery, is a type of computer electronic component. It features high speed and low cost, used for communication between device-level control systems and decentralized I/O. It, along with PROFIBUS-PA (Process Automation) and PROFIBUS-FMS (Fieldbus Message Specification), constitutes the PROFIBUS standard. 2. Basic Information Specifications The PROFIBUS-DP protocol … Read more
Author | Yufei Men Editor | New Story First Published | Global Intelligent Business ▍Image Source: Internet In the internet era, people often use the term “brain hole” to describe some of the strange ideas from netizens. In fact, even before the internet appeared, there were plenty of “brain holes”. For example, the Hollywood movie … Read more
Introduction EcuBus-Pro is an open-source project designed to provide communication protocols and tools for automotive electronic control units (ECUs), enabling developers to interact with vehicle ECUs for diagnostics, debugging, data logging, and performance optimization. It has the following main features: Open-source and free User-friendly interface Cross-platform support (Windows, Linux, MacOS) Multi-hardware compatibility, including PEAK, KVASER, … Read more
Yuan Zheng has added two practical features during the diagnostic process: displaying the car voltage and allowing continued diagnostics after Bluetooth reconnection during the diagnostic process. Voltage Display in the Upper Right Corner of the Diagnostic Process During vehicle repairs, technicians often need to connect an external power source to charge the car, to prevent … Read more
The PLC system is like the human nervous system; its inputs and outputs are how it perceives and controls the world. However, sometimes this “nervous system” can encounter issues—buttons not responding, indicator lights not illuminating, motors not turning. These input/output response problems can be frustrating, especially during an emergency shutdown on the production line. Don’t … Read more
In automotive electronic diagnostics, secure access (0x27) and communication control (0x28) are two key technologies. The former protects ECU data security, while the latter optimizes communication efficiency. Mastering these is essential for becoming a diagnostic expert! 1. Secure Access (SID 0x27): The ECU’s ‘Password Lock’ Mechanism The ECU stores critical vehicle data (such as program … Read more
There are input and output circuits on the ECU hardware, while the software consists of programs and data. The assessment of ECU functionality should focus on these three aspects. Given the numerous pins and functions utilized by the ECU, it is advisable to create a project list and measure each item one by one. Measurement … Read more
1. Core Fault Analysis of ECU Anomalies 1. Program Corruption: The “Amnesia” of Digital Neurons Typical Triggers: Unofficial ECU tuning (e.g., aggressive first/second-order program flashing leading to checksum failure) CAN bus signal conflicts (devices occupying diagnostic protocol IDs, such as permanent devices on the OBD interface) OTA upgrade interruptions (voltage fluctuations causing packet loss rate … Read more