OPC data transmission system and method capable of penetrating firewall

Abstract

The invention discloses an OPC data transmission method capable of penetrating a firewall. The method comprises the following steps S1, by a data acquisition server, acquiring DCS data in a DCS database through a first OPC channel, S2, integrating the DCS data into a DCS data stream by the data acquisition server, S3, enabling the DCS data flow to flow into a data receiving client in a one-way manner through a UDP channel, S4, by the data receiving client, analyzing the DCS data flow and restores the DCS data flow into originally acquired DCS data, S5, enabling the restored DCS data to flow into a management information system through a second OPC channel, and S6, by the management information system, providing and displaying the DCS data to the outside. According to the invention, after the OPC data at the control network side passes through the firewall, the data is provided on the management network in an OPC mode in a lossless manner, the DCS control network is not influenced, andthe safety of industrial production is improved.

Description

technical field [0001] The invention relates to the technical field of data transmission, in particular to an OPC data transmission system and method capable of penetrating firewalls. Background technique [0002] With the popularity of the concept of "control-integration" in the field of industrial control in recent years, and gradually becoming an important trend in the development of industrial automatic control, more and more enterprises hope to connect the control system to the management information system that has been or will be established . On the other hand, because the management information system is often connected to the Internet, there may be hidden dangers in the overall network security of the management information system. If the management information system is directly connected to the DCS control network, it will be unpredictable to the safety and reliability of the control system. danger. At present, most of the DCS data is transmitted to the managem...

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Problems solved by technology

[0003] The invention solves the problem in the prior art that the OPC communication port is random and bidirectional communication, and the DCS data can pass through the firewall to the management network through the control network, and proposes an OPC data transmission system and method that can penetrate the firewall. The OPC data on the control network side passes through the firewall and provides data on the management network in the form of OPC without loss, without affecting the DCS control network, which improves the safety of industrial production

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