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System and method for transmitting OPC data via asynchronous data network

A technology of data network and data, applied in the field of data network, can solve problems such as impossible

Inactive Publication Date: 2005-08-10
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, until today it has not been possible to combine OPC technology with the Internet in its full range of functions, because an asynchronous data transmission method is required here, that is, a time-independent, two-way communication, and this communication has been on the Internet until now not yet possible

Method used

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  • System and method for transmitting OPC data via asynchronous data network
  • System and method for transmitting OPC data via asynchronous data network
  • System and method for transmitting OPC data via asynchronous data network

Examples

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Embodiment Construction

[0025] figure 1An embodiment of a system for operating and monitoring an automation system 5 comprising, for example, a stored program control system (SPS), a numerical control system (NC) and / or drive systems (Drives) is shown. The system has an operating and monitoring system 1 (B&B client), which is coupled via an internal data network 6, eg Ethernet, to a firewall computer. B&B Client 1 is also OPC Client 1 in this example. The operating and monitoring system 1 , referred to below simply as the B&B system 1 , is assigned a local intranet address which is not necessarily known on the Internet. exist figure 1 The firewall of the firewall computer 2 , which surrounds the internal communication network 31 (=intranet 31 ) of the firewall server 2 , is indicated by the line segment 9 a. Reference numeral 10 denotes the Internet, a global data communication network. The firewall computer 2 can be connected to the Internet 10 via a connection 7, eg ISDN. The automation system...

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Abstract

OPC data is transmitted via data networks, in particular the Internet. A bi-directional data connection via the Internet in both directions is enabled even across firewalls and starting from an OPC client, which is not visible as a server on the Internet. To achieve this, a first connection request for establishing a first transmission channel is sent from a first data processing device of an OPC client, via a data connection, to an OPC server of an automation system. The OPC server responds to the request using a second transmission channel. The data connection is thus kept open permanently, allowing data to be sent and received bi-permanently, allowing data to be sent and received bi-directionally, the operations being temporally independent of each other, between the OPC client and the OPC server by at least one data network, in particular, the Internet.

Description

technical field [0001] The invention relates to a system and method for transmitting OPC data through a data network of asynchronous data connection, especially the Internet. Background technique [0002] OPC (OLE for Process Control (object linking and embedding)) is understood as a uniform, manufacturer-independent description of the software interface between Windows applications and automation systems. Automation systems here mean in particular production control systems and production automation systems, in which data can flow without problems between different systems, applications and devices. OPC thus represents a connection between process control, statistical production control, process optimization and other production applications (for example for processing or production management), corresponding real-time devices and Windows applications. OPC also provides a series of standard interfaces based on OLE or COM, and other suitable interfaces. [0003] By means o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/00G05B19/418H04L29/06H04L29/08
CPCH04L29/0617H04L69/329H04L29/06047H04L29/08072H04L67/02G05B2219/34263H04L67/40H04L67/42H04L29/0809H04L29/06H04L67/133H04L9/40H04L67/01
Inventor 弗兰克·沃尔克曼托马斯·塔拉尼斯马库斯·西博尔德海茵茨-克里斯托弗·施莫尔卡罗兰·海曼托马斯·鲍尔
Owner SIEMENS AG