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A method for program non-disturbance reconfiguration during the running of programmable controller

A controller and programming technology, which is applied in the direction of electrical program control, sequence/logic controller program control, etc., can solve the problems of equipment misoperation, non-equipment, and inability to realize the control process without disturbance, and achieve high availability, The effect of fast processing speed and reduced risk of downtime

Active Publication Date: 2016-08-17
NANJING SCIYON AUTOMATION GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional programmable controllers usually do not have the ability to program online (the control system needs to be shut down for an update and then restarted) or cannot achieve a disturbance-free control process when the new control program is reconfigured (the new program will cause disturbance to the control process when the new program takes effect. equipment malfunction, etc.)

Method used

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  • A method for program non-disturbance reconfiguration during the running of programmable controller
  • A method for program non-disturbance reconfiguration during the running of programmable controller

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Embodiment Construction

[0022] Such as figure 1 As shown, a method for non-disturbance reconfiguration of a programmable controller program related to the present invention is introduced, including a programmable controller control program format and steps for realizing non-disturbance reconfiguration, wherein the control program format includes a data symbol table, Initialize data tables, program codes, and data migration tables. Such as figure 2 The details of the format of the control program are shown in detail, wherein the addresses in the data symbol table are all physical addresses or logical addresses, and the addresses in other tables and codes are in correspondence with the addresses in this table.

[0023] The specific implementation of the present invention comprises the following steps:

[0024] 1) if figure 1 As shown in ①, the programming tool obtains the control program format of the program currently being executed by the controller, and obtains the data symbol table of the curre...

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Abstract

The invention discloses a program non-disturbance reconstruction method in the operation process of a programmable controller. A control program of the programmable controller comprises a data symbol table, an initialized data table, program codes and a data movement table. The program non-disturbance reconstruction method comprises the steps that the data symbol table, before reconstruction, of the control program of the programmable controller and a data symbol table of the reconstructed control program of the programmable controller are compared to generate a reconstructed data movement table; data in a source address in an operation memory area of the current control program are copied to a target address in an operation memory area of the reconstructed control program according to the reconstructed data movement table, so that data coverage is completed, and control program reconstruction is realized. A control system comprising the programmable controller with the function that programs can be reconstructed without disturbance in the operation process has higher usability, updating of the control program can be realized without disturbance under the conditions that a controlled device is not shut down, the shut-down risk is reduced, and economic loss caused by shut-down is reduced.

Description

technical field [0001] The invention belongs to the technical field of automatic control system controller programming, and in particular relates to a method for reconfiguring a program without disturbance during the operation of a programmable controller. Background technique [0002] The core control equipment in the programmable control system, such as the programmable logic controller (PLC) and the distributed processing unit in the distributed control system (DCS), compile the control program through the programming software and load the control program into the control memory to execute the new control program. Realize the reprogramming of the programmable controller. Traditional programmable controllers usually do not have the ability to program online (the control system needs to be shut down for an update and then restarted) or cannot achieve a disturbance-free control process when the new control program is reconfigured (the new program will cause disturbance to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05
Inventor 祖利辉黄伟
Owner NANJING SCIYON AUTOMATION GRP
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