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Control system for CANopen network

A technology of control system and network, which is applied in the field of control system of CANopen network, can solve the problems such as the number of CANopen devices and the limit of communication data volume, and achieve the effect of optimizing data transmission capacity and improving flexibility

Active Publication Date: 2011-04-20
SHANGHAI ELECTRICAL APP RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in practical applications, due to the limitation of the predefined COB-ID (Communication Object Identify) in the CANopen protocol, the capacity of the CANopen network and the amount of communication data of a single node, that is, the number of PDOs (Process Data Objects), are fixed, making CANopen devices Restricted in number and amount of communication data

Method used

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  • Control system for CANopen network
  • Control system for CANopen network
  • Control system for CANopen network

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] figure 1 It is the structural representation of the control system hardware platform that the present invention is used for CANopen network; figure 2 It is a connection diagram between the controller of the present invention and the CANopen network.

[0025] See figure 1 and figure 2 , the hardware part of the controller of the present invention can adopt existing single-chip microcomputer, mainly is divided into following several parts: CPU, memory, power supply, communication interface, I / O interface. The controller of the present invention connects and manages a plurality of CANopen devices through the CANopen network, and provides a low-cost, lightweight device that can integrate remote data and local data of the CANopen network to complete logic control. The networked controller can realize logic control, and can connect multiple CANop...

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Abstract

The invention discloses a control system for a CAN(controller area network)open network. In the control system for the CANopen network, the customization of node number and node communication data quantity in the CANopen network is realized through a CANopen configuration management module, a CANopen bus management module and a CANopen node management module, the node number and the communication capacity of each node in the CANopen network can be flexibly configured, the flexibility of CANopen network management is greatly improved under finite COB-ID(communication object identity) resources, and the data transmission capacity of a single node is optimized.

Description

technical field [0001] The invention relates to a network control system, in particular to a control system for CANopen network. Background technique [0002] Fieldbus is one of the hotspots in the field of automation today, and is known as the computer local area network in the field of automation. The field bus is used to form the bottom layer control network of the factory, which makes the system open and the equipment interoperable. Standardization of function blocks and structures enables interchangeability of devices with the same function. At the same time, the control function is distributed to the field devices, so that the structure of the whole control system has great discreteness. As the basis of the industrial data communication network, it communicates the link between the field-level control devices in the production process and the higher control management layer. This has led to profound changes in the structure and equipment of automation systems. App...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/40
Inventor 李一青薛吉奚培锋
Owner SHANGHAI ELECTRICAL APP RES INST
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