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Programmable logic controller, engineering design tool and storage device storing engineering design tool program

An engineering design tool, programming logic technology, applied in the field of storage devices, can solve the problem of time-consuming

Active Publication Date: 2019-04-12
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Currently, there is a problem with programmable logic controllers that when a malfunction of a sequential function chart (Sequential Function Chart, SFC) program occurs due to an illegal operation of a device value, it takes time to troubleshoot the problem.

Method used

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  • Programmable logic controller, engineering design tool and storage device storing engineering design tool program
  • Programmable logic controller, engineering design tool and storage device storing engineering design tool program

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Embodiment approach 1

[0027] figure 1 It is a figure which shows the structure of the programmable logic controller and engineering design tool which concern on Embodiment 1 of this invention. The programmable logic controller 1 according to Embodiment 1 includes: a device data collection function unit 2 that collects device data; The SFC program configured by transition, which is the second basic unit of the transition condition, is monitored, and the monitoring result is sent to the engineering design tool 12 . In addition, the programmable logic controller 1 has: the program execution part 4 for SFC, which executes the SFC program; the device analysis check part 6 for SFC, which is a device analysis check part for confirming whether the device in the program step has been analyzed; SFC uses the device analysis part 7, and it is when the power supply of programmable logic controller 1 is turned on or after the program in the program step is executed, the device analysis part is analyzed to the d...

Embodiment approach 2

[0051] Figure 12It is a figure which shows the structure of the programmable logic controller and engineering design tool concerning Embodiment 2 of this invention. The programmable logic controller 61 according to the second embodiment differs from the programmable logic controller 1 according to the first embodiment in that it has an SFC parameter storage unit 5 that stores parameters for Each program block specifies whether to collect device data and the scope of the program steps to be collected. In addition, in Embodiment 2, the program execution part 4 for SFC executes an SFC program according to the setting of an SFC parameter.

[0052] The hardware configuration of the programmable logic controller 61 is the same as that of the programmable logic controller 1 of the first embodiment. therefore, Figure 12 The shown SFC parameter storage unit 5 is realized by the storage device 23.

[0053] Such as Figure 12 As shown, the difference between the engineering design...

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Abstract

A programmable logic controller (1), which executes an SFC program with a plurality of program blocks, the program block includes a program step representing an action output and a transfer representing a jump condition, the programmable logic controller (1) has : SFC uses equipment data collecting part (8), and it is when carrying out SFC program, the device data of the equipment that the program step that activates is contained is collected with each scanning; SFC uses equipment data storing part (9), its The data collected by the SFC device data collection unit (8) is stored; and the SFC device data output unit (10) passes the data stored in the SFC device data storage unit (9) through each program step or Each program block is output to the memory card (11) as a unit file.

Description

technical field [0001] The present invention relates to a programmable logic controller capable of easy troubleshooting, an engineering design tool, and a storage device storing an engineering design tool program. Background technique [0002] Currently, there is a problem with programmable logic controllers that when a malfunction of a sequential function chart (Sequential Function Chart, SFC) program occurs due to an illegal operation of a device value, it takes time to troubleshoot the problem. . [0003] Patent Document 1 discloses a programmable logic controller configured to enable confirmation of an SFC program and output states of devices within the SFC program on one screen in order to simplify troubleshooting. [0004] Patent Document 1: Japanese Patent Laid-Open No. 2001-195108 Contents of the invention [0005] However, in the method described in Patent Document 1, the communication time between the programmable logic controller and the engineering tool is lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05
CPCG05B19/054G05B2219/13018G05B19/056G05B2219/13G05B15/02G05B19/058G05B2219/14055G05B2219/14098G05B2219/14115
Inventor 长友美泰高仓圭史
Owner MITSUBISHI ELECTRIC CORP