PLC hardware fault diagnosis platform constructing method

A hardware failure and fault diagnosis technology, applied in the direction of instruments, electrical testing/monitoring, control/regulation systems, etc., can solve problems such as increased automation complexity, increased equipment system failure rate, and large impact on production, so as to reduce fault processing time , Realize condition-based maintenance and improve maintenance efficiency

Inactive Publication Date: 2019-08-23
HANDAN IRON & STEEL GROUP +1
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  • Application Information

AI Technical Summary

Problems solved by technology

With the expansion of the scale of the control system and the increase of automation complexity, the failure rate of the equipment system is also increasing
The failure analysis of the control system shows that the occurrence rate of network system failure and CPU failure is low, but once it occurs, it will have a great impact on production and even cause the entire production line to stop production, and the recovery time will be longer

Method used

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  • PLC hardware fault diagnosis platform constructing method
  • PLC hardware fault diagnosis platform constructing method

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the examples.

[0020] The invention discloses a method for constructing a PLC hardware fault diagnosis platform, see figure 1 , through centralized monitoring of the CPU operating status and network status of the control system, when a fault occurs, it will give an alarm in time, so that the fault point can be quickly and accurately locked, and the fault can be eliminated in time.

[0021] Specific steps are as follows:

[0022] Step ① Extraction of CPU status information; in PLC system 1 and PLC system 2 2, use program instructions to extract CPU status information to form a CPU fault status word (16 bits), and each bit represents a fault status information. CPU status information includes: internal fault, external fault, bus 1 fault, bus 2 fault, redundant module 1 fault, redundant module 2 fault, data force, CPU running, CPU stop, redundancy status, main rack status, for example, th...

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Abstract

The invention relates to a PLC hardware fault diagnosis platform constructing method. In the process, CPU operating state information and network state information are extracted in various different types of PLC control systems to a preset PLC fault state word, the fault state word of each PLC system is transmitted to a database of communication interface software Kepware of a fault diagnosis platform server through an industrial Ethernet network, an OPC function of Kepware is used to communicate data in the database to an RSView Supervisory Edition software monitoring platform interface, andthe hardware state information of the control system is visualized. A fault point can be timely and accurately judged, an alarm record is generated, the fault processing time is greatly reduced, the maintenance efficiency of the control system is improved, analysis and diagnosis of the deterioration trend of the hardware performance of the control system can be realized through the alarm record and historical record functions, and preventive maintenance and state maintenance can be realized.

Description

technical field [0001] This patent application belongs to the technical field of automatic control, and more specifically relates to a method for constructing a PLC hardware fault diagnosis platform. Background technique [0002] PLC controller is an electronic device specially designed for digital operation in industrial environment. It uses a memory that can be programmed to store instructions for performing operations such as logic operations, sequential operations, timing, counting, and arithmetic operations, and can control various types of devices through digital or analog inputs and outputs. machinery or production process. PLC controllers have been widely used in various industries such as steel, petroleum, chemical industry, electric power, building materials, machinery manufacturing, automobiles, textiles, transportation, environmental protection, cultural entertainment, etc. It has high reliability, strong anti-interference ability, powerful functions, Flexible,...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0213G05B2219/24065
Inventor 王红彦王伟兵张伟李玉杰苗贵仓李彦峰
Owner HANDAN IRON & STEEL GROUP
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