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On-the-spot bus scatter control station

A field bus, decentralized control technology, applied in the field of automation systems, can solve the problems of not being able to find networked PLC and PC control systems, unable to support discrete industrial control applications, and high cost, so as to improve the level of industrial automation and cost. Low, easy-to-use effects

Inactive Publication Date: 2003-11-12
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the control systems with PLC and PC as the main control equipment widely use fieldbus technology, so that it is almost impossible to find a networked PLC and PC control system that does not use fieldbus technology.
Since the FF bus standard is mainly oriented to process control applications, it cannot effectively support discrete industrial control applications
Moreover, in the overall development of my country's industrial control system, traditional analog instruments are still widely used in industrial automation systems. There are still many difficulties in the promotion and application of fieldbus control systems in my country.
On the one hand, due to the high price of fieldbus instruments, on the other hand, it is very expensive to transform or discard existing traditional analog instruments

Method used

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  • On-the-spot bus scatter control station
  • On-the-spot bus scatter control station
  • On-the-spot bus scatter control station

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Embodiment

[0027] Such as figure 1 As shown, the field bus decentralized control station of the present invention is a network node based on the FF protocol (H1 version), and this node is made up of a control master station module based on the FF protocol, a general I / O terminal base and various I / O modules, The control master module is connected to each I / O module through the universal I / O terminal base as an interface; wherein: the control master module is an intelligent network communication device based on FF protocol, including I / O management and control and FF protocol communication two modules such as figure 1As shown, the first central processing unit CPU1 responsible for I / O management and the second central processing unit CPU2 responsible for the operation of the FF protocol communication module are glued and logically connected through the dual-port RAM and the control logic circuit CPLD to perform data exchange; The CPU structure is embedded with a programmable algorithm fu...

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Abstract

The control station is based on a network node of FF protocol and it comprises control main station module based on FF protocol, universal I / O terminal base and various I / O modules. Each I / O module is connected to control main station module through the universal I / O terminal base. The control main station module is intelligent network communication device based on the FF protocol, which comprises two modules of I / O management and control as well as FF protocol communication. The first central precessor in charge of I / O management is connected in logic and adherence with the second one is charge of FF protocol communication module operation via dual mouth and control logic circuit to carry on data exchange i.e dual CPU structure is applied as embedding virtualizer of programmable algorithm functional block for finalizing operation of the said block.

Description

technical field [0001] The invention relates to an automation system, in particular to a fieldbus distributed control station used for interconnection of field devices of process automation or manufacturing automation. Background technique [0002] The impact of fieldbus technology on industrial automation systems is comprehensive and profound. Its role is like the impact of digital communication technology on modern communication systems. It is a current hot technology in industrial control systems. The control system based on the field bus has the incomparable technical advantages of the traditional industrial control system. The advanced industrial control systems in the international market widely adopt the fieldbus technology, which drives the overall technical development of the industrial automation system. [0003] The field bus intelligent instrument is the key equipment in the field bus control system (FCS, Fieldbus Control Systems). The development of advanced c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/01G08C19/00H04L29/00H04L29/06
Inventor 赵海燕康凯林跃巍剑嵬黎一兵
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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