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Device and method of detection and display of CAN error frame

An error frame and display unit technology, which is applied in the direction of data exchange, digital transmission system, electrical components, etc. through path configuration, which can solve the problem of inability to detect and display CAN error frames.

Inactive Publication Date: 2007-02-14
HARBIN INST OF TECH
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Problems solved by technology

[0003] Aiming at the problem that the prior art cannot effectively detect and display CAN error frames, the present invention provides a device and method for detecting and displaying CAN error frames

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  • Device and method of detection and display of CAN error frame
  • Device and method of detection and display of CAN error frame

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specific Embodiment approach 1

[0012] Specific implementation mode one: combine figure 1 , figure 2 This embodiment will be specifically described.

[0013] The device in this embodiment consists of a first node 1, a second node 2, a third node 3, and a fourth node 4:

[0014] The first node 1 is composed of a first processor 1-1, a first keyboard 1-2, a first display unit 1-3, a first communication unit 1-4, a first start button 1-5 and a stop button 1-6 ; The data input and output bus end of the first processor 1-1 is connected to the data input and output bus end of the first communication unit 1-4, and the control output bus end of the first keyboard 1-2 is connected to the first processor 1-1 Control input bus terminal, the display data output end of the first processor 1-1 is connected to the display data input end of the first display unit 1-3, and the start signal output end of the first start button 1-5 is connected to the first processor The start signal input end of 1-1, the stop signal outpu...

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Abstract

This invention relates to a device and a method for detecting and displaying CAN error frames, in which, each starting button is connected on its own processor and stop buttons 1-6 are connected on a first processor, the detection unit 4-5 are connected between the fourth processor 4-1 and the fourth communication unit, the processor of each node is connected on the CAN bus via its own communication unit, the method includes: 1, starting the system, 2, initializing the nodes and setting identification symbol fields of the nodes, 3, pressing the starting buttons of the nodes orderly, 4, pressing the stop buttons 1-6, 5, the fourth node detects the CAN error frames and displays.

Description

technical field [0001] The present invention relates to the technical field of CAN error frame detection and display device and method Background technique [0002] Fieldbus technology has been increasingly used in industrial sites. CAN bus has been more and more widely used because of its unique advantages such as high efficiency, low price and high reliability. The CAN communication protocol stipulates 4 different frame types, namely data frame, remote frame, error frame and overload frame. Among these frame types, people often care about data frames and remote frames closely related to data sending and receiving, but ignore the existence and importance of error frames. Error frame is a major difficulty in CAN technology, it is directly related to the communication quality of the whole device. At present, there are relatively few researches and analyzes on CAN error frames at home and abroad, and there is no effective means to detect and display CAN error frames. Cont...

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Application Information

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IPC IPC(8): H04L12/26H04L12/24H04L12/40
Inventor 佟为明李凤阁林景波刘勇金显吉高洪伟
Owner HARBIN INST OF TECH
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