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Programmable controller

A programming controller and control device technology, applied in the direction of program control, electrical program control, computer control, etc., can solve problems that cannot meet the needs of rapid event response

Inactive Publication Date: 2002-12-11
OMRON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In this case, user program execution processing, input / output update processing, and event processing are also sequentially repeated one by one as a series of loop processing, so it does not move to event processing until user program execution processing and input / output update processing are completed. , so peripheral processing cannot be performed with priority, and there is a problem that fast event response cannot be satisfied

Method used

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  • Programmable controller
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Embodiment Construction

[0019] Hereinafter, an embodiment of the programmable controller of the present invention will be described in detail with reference to the drawings.

[0020] figure 1 It is a block diagram showing the overall configuration of the CPU unit of the programmable controller of the present invention.

[0021] in figure 1 Wherein, the CPU unit of the programmable controller includes: MPU (Micro Processing Unit; general arithmetic processing unit) 101; ROM (Read Only Memory; read only memory) 102; RAM (Random Access Memory; random access memory) 104; User memory 105; ASIC (Application Specific Integrated Circuit; special purpose control device) 106; I / O memory 107; and I / O bus 108.

[0022] Here, the MPU 101 is a micro-processing unit that manages the overall operation of the CPU unit section, and similarly to a conventional programmable controller, it cyclically performs user program execution processing, input / output update processing, and event processing. Then, it is connected to ...

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Abstract

Shorten cycle time and improve responsiveness in programmable controllers equipped with general-purpose arithmetic processing units and special-purpose control units. After the MPU (101) entrusts the ASIC (106) to execute the user program or the I / O update process, it starts to execute the event processing, and terminates the above-mentioned event process according to the processing end notification of the above-mentioned user program or the I / O update process from the ASIC (106). , and performs so-called internal processing that returns to normal processing, thereby realizing parallel execution of user program execution processing, input / output update processing, and event processing.

Description

Technical field [0001] The present invention relates to a programmable controller, and particularly relates to the execution of user program execution processing or input / output update processing, by parallel execution of peripheral service processing (event processing) of peripheral components such as high-level systems, communication units, etc., to shorten the performance Programmable controller and its control method to improve its responsiveness by programming the cycle time of the CPU unit of the controller. Background technique [0002] Generally, a programmable controller is composed of an I / O unit that connects sensors, switches, and regulators, a CPU unit that executes a predetermined user program, and a communication unit that communicates with a higher-level system via a network. Moreover, in the medium-sized and small-sized models of programmable controllers, an MPU (Micro Processing Unit) is provided in the CPU unit, and sequence control is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/042G05B2219/34008
Inventor 冈田和智
Owner OMRON CORP
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