1. What is CAN Bus CAN Bus (Controller Area Network) is a widely used communication system in vehicles and industrial equipment, designed for reliable data transmission between various Electronic Control Units (ECUs). For example, in automobiles, the CAN Bus enables quick and secure information exchange between the braking system and the engine management system. A … Read more
☆Star this public account to not miss any updates☆ Whether it is the CAN bus or any computer system, data is ultimately stored and processed in binary. However, for the convenience of human reading and writing, we extensively use hexadecimal and decimal. Below, I will explain in detail binary, decimal, and hexadecimal, as well as … Read more
A crucial aspect of automotive development—revealing the secrets of calibration! What is Automotive Calibration Technology? Engineers set and adjust thousands of parameters in the vehicle’s ECU through a series of experiments, tests, and data optimization to ensure that all systems of the vehicle achieve optimal performance, efficiency, environmental friendliness, and comfort. The different calibration styles … Read more
Click the blue text Follow us We have encountered the issue of bus-off errors, and this article serves to document the resolution for this problem. The error message is as follows: Cause: Node crash, when the error accumulates to a certain number of occurrences, it will result in bus off. Solutions: 1. You can set … Read more
Differential Signaling In the field of electronic communication and signal transmission, “differential signaling” is a frequently encountered technical term. From USB data cables and HDMI video cables to automotive CAN buses and industrial Ethernet, it relies on this method to achieve stable data transmission. The core logic is quite simple — using “comparison” instead of … Read more
A Comprehensive Guide to CAN Bus DBC Files: From Basics to Practice Happy Teacher’s Day Introduction: Why are DBC Files Necessary? In modern automotive electronic systems, the Controller Area Network (CAN) bus is one of the most important communication protocols. It allows for reliable data exchange between Electronic Control Units (ECUs), enabling various functions from … Read more
The CAN bus, as a core communication protocol in the automotive and industrial fields, achieves high-reliability multi-node communication through differential signaling and non-destructive arbitration. Its physical layer uses CAN_H and CAN_L to transmit differential signals over a two-wire system, distinguishing between dominant (logic 0) and recessive (logic 1) states through voltage differences. Coupled with 120Ω … Read more
The development of intelligent electrification in automobiles has led to an increase in the number of automotive controllers (ECUs), with CAN communication becoming the mainstream method for communication between controllers, as shown in the figure below:The vehicle control is divided into body PCAN and power ECAN, with resistors connected at both ends of the CAN … Read more
Click the blue text Follow us Abstract: Why is it necessary to install terminal resistors in CAN bus networks? In the article detailing the characteristics of CAN bus: high-speed CAN bus and low-speed CAN bus, it is stated that both high-speed and low-speed CAN networks require terminal resistors to be installed. High-speed CAN networks require … Read more
The CAN bus (Controller Area Network), is a serial communication protocol designed specifically for industrial, automotive, and embedded systems. Its core features include multi-node shared bus, high reliability, and strong real-time performance, enabling efficient data exchange between multiple electronic devices (nodes) without the need for a central controller. The CAN bus was developed by Bosch … Read more