Functional block with FF (foundation fieldbus) interface

A technology of interface function and function block, applied in the field of industrial automation control and field bus, can solve the problem of high network load

Active Publication Date: 2013-01-02
ZHEJIANG SUPCON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, DCS realizes the online modification of instrument function blocks by triggering parameter modification commands through modification events, but this method will generate parameter modification commands regardless of whether the parameter values ​​change before and after the modification event, such as the common When modifying the parameters of the instrument function block through the self-defined function block in DCS, in each cycle of the operation of the sel...

Method used

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  • Functional block with FF (foundation fieldbus) interface
  • Functional block with FF (foundation fieldbus) interface
  • Functional block with FF (foundation fieldbus) interface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] See figure 2 , figure 2 A structure of the above-mentioned FF interface function block is shown, which includes a data storage 100 and a control logic module 200, wherein the data storage 100 includes a running data storage 110 and a backup data storage 120, and the control logic module 200 includes an analysis Module 210 and Online Modification Module 220.

[0058] The analysis module 210 is configured to analyze the instrument real-time data of the instrument function block, and update the analyzed data to the operation data storage 110 and the backup data storage 120 .

[0059] The running data memory 110 is used for displaying and modifying the data of the external upper module of the DCS.

[0060] Specifically, the operating data memory 110 is used as a data buffer area open to the external upper layer modules of the DCS, and the external upper layer modules of the DCS such as the operating station or the engineer station can be used as a host computer to read ...

Embodiment 2

[0071] On the basis of the first embodiment above, please refer to Figure 4 , in Embodiment 2 of the present invention, the data storage 100 may further include a raw data storage 130, which is used to receive and buffer real-time data of the instrument sent by the functional block of the instrument.

[0072] Specifically, the original data storage 130 is the receiving buffer for the data sent by the instrument function block, which defines the data structure according to the FF standard protocol. The original data storage 130 includes three independent units: the second view data storage, the third view data storage and the fourth view data memory, respectively used to store the view in the instrument function block figure 2 ,See image 3 And as Figure 4 data.

[0073] In the second embodiment, the parsing module is specifically configured to parse the data in the original data storage, and update the parsed data to the running data storage and the backup data storage. ...

Embodiment 3

[0076] On the basis of the first and second embodiments above, in the third embodiment of the present invention, the control logic module may further include a data update module, a pin state processing module and a process alarm processing module, wherein:

[0077] Data update module, used for view channel data update and fast channel data update;

[0078] The pin state processing module is used for adaptive processing of the pin state of the pins in the DCS and the pins in the instrument function block;

[0079] The process alarm processing module is used to enable and indicate the process alarm of the instrument function block.

[0080] The structures and functions of other modules are the same as those in Embodiment 1 or Embodiment 2. Please refer to the relevant content in Embodiment 1 or 2 for details, and will not be described in detail here.

[0081]In the present invention, the FF interface function block is built in the central controller of the DCS, and is composed...

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Abstract

The invention discloses a functional block with an FF (foundation fieldbus) interface. The functional block comprises a data storage and a control logic module. The data storage comprises an operational data storage which opens for the external upper layer module of DCS (distributed control system). By real-time monitoring and online modifying data in the operational data storage, the external upper layer module of the DCS monitors in real time and modifies online the data of an instrument functional block. The control logic module only modifies the data of the instrument functional block when data content in the operational data storage changes, namely, modification is performed when data in the instrument functional block needs to be modified, and accordingly network load is lowered. By the functional block with the FF interface, the DCS is can control an FF device. The functional block can be built in a central control unit of the DCS. Mixing control of the DCS and the FF device can be achieved by building control schemes between the central control unit and the lower field instruments by the aid of the external upper layer module of the DCS, functions such as real-time monitoring, online modifying, warning and browsing can be performed by the DCS to the instrument functional block.

Description

technical field [0001] The invention belongs to the fields of industrial automation control and field bus, and in particular relates to an FF (Foundation Fieldbus, Foundation Fieldbus) interface function block. Background technique [0002] FF technology is a fieldbus technology specially designed for the field of industrial control. FF can provide a fully digital, two-way, multi-node communication connection between intelligent field devices and industrial control systems. Devices from different manufacturers based on the same FF protocol The same system can be accessed through FF, and the interoperability between devices can be realized, so as to achieve the best system integration. At present, FF has been supported by the world's major control equipment suppliers and has become an international standard. It has an excellent prospect in the field of industrial control. Correspondingly, FF smart instruments in FF fieldbus equipment (referred to as FF equipment) have gradual...

Claims

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Application Information

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IPC IPC(8): G05B19/418
Inventor 章凌裘坤吴洁芸赖晓健周娓王薇
Owner ZHEJIANG SUPCON TECH
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