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Apparatus and method for retrieving plc data records

A data recording and data technology, which is applied in the fields of electrical digital data processing, special data processing applications, general control systems, etc., can solve the problems of retrieval time delay and reduction of device functions, etc.

Inactive Publication Date: 2017-04-12
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the retrieval time will be delayed and the functionality of the device will be reduced

Method used

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  • Apparatus and method for retrieving plc data records
  • Apparatus and method for retrieving plc data records
  • Apparatus and method for retrieving plc data records

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Embodiment Construction

[0019] The terms and words used in this specification and claims should not be interpreted only as the meanings commonly used in dictionaries, but should be based on the fact that the inventor can properly define the terms to best interpret the fact of the present invention, These terms and vocabulary are to be construed as meanings associated with the technical scope of the present invention.

[0020] Therefore, the embodiments and configurations illustrated in the drawings are only exemplary suggestions and do not represent the full technical scope of the embodiments, so it should be understood that various equivalents and modifications may exist at the time of filing this application .

[0021] figure 2 is a block diagram illustrating the construction of an apparatus for retrieving PLC data records according to an embodiment.

[0022] refer to figure 2 , the device for retrieving PLC data records according to an embodiment includes a data recording module 200 , an inte...

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Abstract

The present invention discloses an apparatus and method for retrieving PLC data records. The means for retrieving PLC data records comprises: a data recording module that operates a linear characteristic for data retrieval based on at least one data retrieval parameter, uses the computed linear characteristic to calculate an index value or a time data value, and uses at least a calculated index value or calculated time data value to retrieve data; an interface unit that receives a retrieval request signal or at least one parameter for data retrieval and outputs data retrieved from said data recording module; and a storage unit , which stores data and parameters input or output through the interface unit.

Description

technical field [0001] The present invention relates to an apparatus and method for retrieving data records of a programmable logic controller (PLC). Background technique [0002] Data recording can be controlled in accordance with input conditions of device values ​​of the PLC CPU, and the data recording can be stored as data in a storage device such as a memory card. This stored data can be retrieved in a manner adapted to the requirements of the user. [0003] The data logging module must store the values ​​processed by the PLC CPU at high speed and losslessly. In such a manner, when retrieving stored data while storing data at high speed, it is necessary to retrieve many times and wrong values ​​may be retrieved. [0004] figure 1 Is a flowchart illustrating a method of retrieving data records for a PLC according to the prior art. [0005] refer to figure 1 , the means for retrieving a PLC data record receives a parameter for a retrieval target from a user (S102), a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
CPCG06F16/90335G05B19/058G06F16/2455G05B19/05
Inventor 金枡锺
Owner LSIS CO LTD