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A Online Analysis and Diagnosis Method of PLC Program Signal

A diagnostic method and a technology of program signals, applied in the field of PLC programs, can solve problems such as low test efficiency, and achieve the effect of high diagnostic efficiency

Active Publication Date: 2021-07-20
GUANGZHOU CORESING ROBOT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has the same disadvantage as the previous method, that is, the test efficiency is very low

Method used

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  • A Online Analysis and Diagnosis Method of PLC Program Signal
  • A Online Analysis and Diagnosis Method of PLC Program Signal

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Experimental program
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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and specific embodiment the present invention is further described:

[0030] A PLC program signal online analysis and diagnosis method is mainly used for the acquisition, diagnosis and analysis of PLC signals. One frame of screen can analyze 12 signal sources at the same time. Refer to figure 1 , click the trace setting button on the PLC diagnostic interface to enter the signal analysis setting interface, and the subsequent steps include:

[0031] S1. Under the environment based on PLC diagnosis interface, carry out signal analysis setting, described signal analysis setting comprises filling in the address of each road signal in address column, select wherein any road signal as trigger signal;

[0032] S2. Set the waveform width, and its unit is milliseconds (ms). On the screen, each grid represents a unit of time, and the minimum is 2 milliseconds. [147198] on the right side indicates the start address and end address of ...

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Abstract

The invention discloses a method for online analysis and diagnosis of PLC program signals. The steps include: performing signal analysis and setting based on the environment of the PLC diagnosis interface. The signal analysis and setting include filling in the addresses of various signals in the address bar, Select any one of the signals as the trigger signal; set the waveform width; perform signal tracking settings, the signal tracking settings include setting the trigger mode of the signal and setting the level signal for automatic triggering; after completing the signal tracking setting, turn on the signal tracking sampling mode. The invention has the advantages of simple and convenient operation and high diagnostic test efficiency.

Description

technical field [0001] The invention relates to the technical field of PLC programs, and more specifically, relates to an online analysis and diagnosis method for PLC program signals. Background technique [0002] PLC is a general-purpose controller used in industrial automatic control. It is widely used in machinery, metallurgy, petroleum, chemical industry, textile, transportation, electric power, military and other fields, and has achieved considerable technical, economic and social benefits. [0003] A typical PLC includes a processor (CPU), system program memory, and user program and data memory. CPU is the core of PLC. It is used to run user programs, monitor the status of input / output interfaces, make logical judgments and perform data processing, that is, read input variables, complete various operations specified by user instructions, and send the results to the output terminal. And respond to requests from external devices (such as computers, printers, etc.) and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05
CPCG05B19/056G05B2219/13142
Inventor 邱民甘玉轩万军杨张锦源
Owner GUANGZHOU CORESING ROBOT TECH CO LTD
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