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Protocol conversion device and data transmission method

A data transmission method and protocol conversion technology, applied in the field of industrial control, can solve problems such as inability to directly communicate with each other

Inactive Publication Date: 2012-01-04
CHINA CNR CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When devices using CANopen and HDLC communication protocols coexist, the two parties cannot directly communicate with each other

Method used

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  • Protocol conversion device and data transmission method
  • Protocol conversion device and data transmission method
  • Protocol conversion device and data transmission method

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Embodiment Construction

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0038] figure 1 It is a schematic structural diagram of a protocol conversion device provided by an embodiment of the present invention. Such as figure 1 As shown, the device of this embodiment includes: CANopen bus protocol controller 11 , CANopen bus transceiver 12 , main control unit 30 , HDLC bus protocol controller 21 and HDLC bus transceiv...

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Abstract

The invention provides a protocol conversion device and a data transmission method. The device comprises a CANopen (controller area network) bus transceiver, a CANopen bus protocol controller, a main control unit, an HDLC (high level data link control) bus protocol controller and an HDLC bus transceiver, wherein the CANopen bus transceiver and a CANopen bus can mutually transmit a CANopen data frame; the CANopen bus protocol controller and the CANopen bus transceiver can mutually transmit the CANopen data frame; the main control unit is used to read the CANopen data information from the CANopen bus protocol controller and write the information into the HDLC bus protocol controller; the HDLC data information is read from the HDLC bus protocol controller and is written into the CANopen bus protocol controller; the HDLC bus protocol controller and the HDLC bus transceiver can mutually transmit the HDLC data frame; and the HDLC bus transceiver and an HDLC field bus can mutually transmit the HDLC data frame. According to the technical scheme provided by the invention, the CANopen network and the HDLC bus can mutually transmit data.

Description

technical field [0001] The invention relates to the field of industrial control, in particular to a protocol conversion device and a data transmission method. Background technique [0002] The Open Control Area Network (CANopen) protocol set defines the application standard of the distributed industrial automation system based on the Control Area Network (abbreviation: CAN) and the CAN application layer communication standard. CANopen is one of the standards defined by CAN in the field of automation (CAN-in-Automation; referred to as: CiA), and has been widely recognized shortly after its release; The leading standard in the system. At present, CANopen has a wide range of applications in urban rail vehicles and electric vehicle control systems. [0003] High-Level Data Link Control (HDLC for short) is a kind of serial bus communication protocol, which is suitable for industrial control sites. At present, HDLC is widely used in rail vehicle control systems and other fields....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
Inventor 杜振环宫保贵沈世博王晓鹏
Owner CHINA CNR CORPORATION
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