High-precision PLC analog quantity output module tool testing method and system

A technology of output module and test method, applied in the direction of using digital measurement technology for measurement, can solve the problems of low test efficiency and low test accuracy, and achieve the effect of improving test efficiency and accurate test results

Pending Publication Date: 2017-05-17
中电智能科技有限公司 +1
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Problems solved by technology

Based on this, a high-precision tooling test method and system for analog output modules is designed to solve the problems of low test efficiency and low test accuracy in manual test methods, and greatly improve test accuracy and test efficiency.

Method used

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  • High-precision PLC analog quantity output module tool testing method and system
  • High-precision PLC analog quantity output module tool testing method and system
  • High-precision PLC analog quantity output module tool testing method and system

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Embodiment Construction

[0026] 1. Description of the high-precision analog acquisition device:

[0027] The structure of the high-precision analog acquisition device is as follows: figure 1 shown.

[0028] The high-precision analog acquisition device includes:

[0029] CPU, analog quantity acquisition module, Flash chip, signal conversion module, signal processing circuit, access terminal and output module; said access terminal is multiple, can access multiple current inputs, and said analog quantity acquisition module includes multiple an analog quantity acquisition chip, and one-to-one correspondence with the access terminal; the CPU is connected to the Flash chip, a signal conversion module, an analog quantity acquisition module and an output module; the access terminal is connected to a signal processing circuit; the signal processing The circuit is connected with each analog quantity acquisition chip.

[0030] The internal connection mode of the high-precision analog quantity acquisition devi...

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Abstract

The invention discloses a high-precision PLC analog quantity output module tool testing method and a high-precision PLC analog quantity output module tool testing system; the testing system is composed of a tested PLC analog quantity output module, a tool testing software, a high-precision analog quantity collecting device and a PLC main control system. The testing method includes steps of (1), the tool testing software transmits corresponding testing data to the PLC main control system through a tested object; (2), a main controller of the PLC main control system controls the analog quantity output module to output a setting analog quantity output signal; (3), the high-precision analog quantity collecting device collects the output signal of the analog quantity output module, and converts into a digital signal and then sends back to the tool testing software; (4), the tool testing software acquires the testing analysis result according to the contrast between the returned data and issued testing data; the whole testing process is free from direct artificial interference; the system automatically tests, analyzes and outputs result, thereby largely improving the testing efficiency and reducing artificial operation bias.

Description

technical field [0001] The invention relates to the fields of tooling testing and PLC, in particular to a high-precision testing method and system for PLC analog output modules. Background technique [0002] With the rapid development of industrial production automation and the proposal of intelligent manufacturing-related strategies, PLC, which is specially used in the field of industrial automation and occupies a dominant position, has become more and more important, and its control scale and control capabilities have been gradually improved and perfected. At present, a large number of industrial production processes will require the core controller to generate analog control signals to control the controlled equipment, and PLC has a special analog processing function, so it is widely used in process control systems. Through the integration of various advanced technologies, it is an important development direction in the field of industrial process control to realize the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/25
CPCG01R19/25
Inventor 赵德政郭肖旺丰大军张晓莉贡春燕杨志明徐一凤柯皓仁
Owner 中电智能科技有限公司
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