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Redundant controller of Profibus-decentralized periphery (DP)

A field bus and controller technology, which is applied in the directions of comprehensive factory control, electrical program control, and comprehensive factory control, etc., can solve the problems of increased cost, limited selection of controller products, and low redundancy performance of controllers. Guarantee the effect of stable operation

Inactive Publication Date: 2013-04-24
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current field of thermal power generation unit control, the domestic Profibus fieldbus control system has low controller redundancy performance and mainly relies on imported control systems, resulting in large limitations in the selection of controller products and increased costs.

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  • Redundant controller of Profibus-decentralized periphery (DP)
  • Redundant controller of Profibus-decentralized periphery (DP)
  • Redundant controller of Profibus-decentralized periphery (DP)

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Embodiment Construction

[0043] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0044] The Profibus-DP field bus redundant controller (FCS165 field bus redundant controller) provided by the present invention includes two controllers with the same structure and mutual redundancy connected through the slots of the backplane, one of which is the work control controller, and the other is a standby controller in hot standby state;

[0045] When any controller is powered on, its IN1 sends a high-level signal 1, and it is connected to another controller through the slot on the backplane, so that it gets the signal OUT1=0, and the controller knows that its corresponding controller exists;

[0046] The output signal of any one of the two controllers: its own state signal OUT2 and its own role signal OUT3, are respectively connected with the input signal of the other one: the rela...

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Abstract

The invention discloses a redundant controller of Profibus-decentralized periphery (DP). The redundant controller consists of two identical controllers. Each controller is as the redundancy of the other and the two controllers are connected together through a back plate slot. One of the controllers is a work controller, and the other is a spare controller in hot standby state. By means of judgment of a main role and a spare role, real time data backup and exchange of master control, non disturbance data shift of the work controller and the spare controller is achieved, and stable operation of the whole controlling system is ensured. The shift time of the work controller and the spare controller can be as short as 132us, and thus the advancement of the redundant design of the Profibus-DP controller is embodied.

Description

technical field [0001] The invention belongs to the technical field of field bus redundancy and relates to a Profibus-DP field bus redundancy controller. Background technique [0002] Redundancy usually refers to increasing the reliability of the system by configuring multiple backups. For the current mainstream fieldbus controllers, the 1:1 backup method is generally adopted on the basis of considering the cost performance, that is, two controllers that are mutually backup and can be switched without disturbance are configured in one control station. The essence of redundant configuration is that both controllers are working, and the switching is just to exchange the master control. The ideal design goal is to achieve zero-second switching. [0003] Although every fieldbus control system manufacturer is trying their best to pursue the ideal design goal of zero-second switching, it is actually difficult to achieve and can only be minimized. Therefore, the switching time be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 崔逸群李哲毓黄策张翔张博威
Owner XIAN THERMAL POWER RES INST CO LTD
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