System and method for data communication between application software and distributed control system

Abstract

The invention provides a method for exchanging data of application software and a distributed control system, which comprises the following steps: monitoring the network connection state between a host and the distributed control system; sending a data transmission request to the distributed control system according to the monitored result; sending a data testing packet to the distributed controlsystem to test whether communication connection between the distributed control system and the host is normal when the distributed control system receives the data transmission request; translating an instruction sent by the application software through a data access interface into a readable format of the distributed control system and sending the instruction to the distributed control system; receiving the result of the instruction processed by the distributed control system, translating the result into a readable format of the application software and sending the format to the application software.

Description

technical field [0001] The invention relates to a system and method for exchanging data between application software and a distributed control system. Background technique [0002] Distributed Control System (DCS: Distributed Control System) occupies a dominant position in today's industrial control field as a mature technology. The DCS system can be divided into three levels: process control level, control management level, and production management level. The first layer of process control level mainly uses PLC (Programmable Logical Controller) or I / O modules to form the basic control of field devices through the field bus; the second layer is the control management level, that is, the monitoring computer through the industrial control network It is connected with PLC or I / O module to realize the upper computer monitoring of the process equipment; the third layer is the production management layer, that is, the file server, the management computer and the industrial LAN ...

AI Technical Summary

Problems solved by technology

[0003]Because there is no uniform standard for DCS systems in the industry, some DCS systems cannot be directly connected with enterprise application software (such as: ERP system), so application software cannot be implemented. Data exchange with distributed control systems

If you want to view the on-site data in the DCS system, you can only view it through the DCS system. The systems in the factory cannot be integrated and communicated, which reduces the efficiency of factory operation.

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