Data exchange device for steel rolling process control system and WinCC interface, and communication method thereof

Abstract

The invention relates to the technical field of steel rolling auto-control, and in particular to a data exchange device for a steel rolling process control system and a WinCC interface, and a communication method thereof. The data exchange device comprises a PLC, a process machine with a network employing an SOCKET communication mechanism, a database machine and at least two HMIs, wherein the initial parameter output end of the database machine is electrically connected together with the initial parameter input end of the process machine by a conductive wire. The data exchange device disclosed by the invention is of a double-layer structure, and the inner layer establishes an OPC server at a human machine interface end by virtue of a multithread technology and based on an OPC protocol, so as to perform data reading-writing, and the outer layer establishes SOCKET communication with the process machine based on a TCP / IP protocol, in this way, a thread mutex mechanism is established to realize a parallel processing effect; the data exchange device is fast in transmission speed, high in reliability and efficiency, simple and convenient to operate, capable of completely meeting the working need of 7*24-hour line-rolling, and basically free from no increase of system burden.

Description

technical field [0001] The patent of the present invention relates to the technical field of steel rolling automatic control, specifically a steel rolling process control system and WinCC interface data exchange device and communication method thereof. Background technique [0002] With the continuous development of my country's steel rolling technology, domestic advanced rolling mills generally have a complete two-level control system, namely basic automation (L1) and process control system (L2). Among them, the human-machine interface system (HMI) of many users is developed using the WinCC software platform of Siemens Company. How to make the L2 and HMI carry out stable real-time data exchange is the primary problem that needs to be solved. [0003] At present, most small and medium-sized rolling lines in China still use semi-automatic production methods. Only a few large-scale state-owned enterprise broadband steel rolling lines have imported advanced computer control sys...

AI Technical Summary

Problems solved by technology

[0003] At present, most small and medium-sized rolling lines in China still use semi-automatic production methods. Only a few large-scale state-owned enterprise broadband steel rolling lines have imported advanced computer control systems from abroad, which can automatically roll steel. Most of the core parts of these imported systems, such as communication components, are It is provided to us in the form of "black box", without independent intellectual property rights

There are also some enterprises with process control systems that use DDE (Dynamic Data Exchange) technology to realize open data exchange, but its technical reliability and security are relatively low, and it cannot meet the requirements of continuous production and high reliability.

Others use the Net software provided by Siemens to install it on the WinCC server and process control server for communication. This method is cumbersome to configure, and it is extremely inconvenient to add or change communication content. Moreover, the Net software increases the system burden seriously and the user experience is very poor.

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