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Method for remotely modifying PLC program through WEB

A program and remote technology, applied in the field of PLC expansion, can solve the problems that the maintenance personnel at the operation end do not have the ability to develop PLC, the development tools are large, and the tools do not have the function of remote control PLC.

Pending Publication Date: 2020-10-16
南京东唯电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing remote clients generally do not install PLC development tools, because the PLC development tools are relatively large, and the existing tools do not have the remote control PLC function, and the maintenance personnel at the operation end generally do not have professional PLC development capabilities , so a WEB method for remotely modifying PLC programs is proposed, which facilitates rapid maintenance and reduces project maintenance costs

Method used

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  • Method for remotely modifying PLC program through WEB
  • Method for remotely modifying PLC program through WEB

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] A kind of WEB method for remotely modifying PLC programs proposed by the present embodiment includes a Web terminal, a router and a plurality of PLCs, the Web terminal is connected to a router network, and the router is connected to a plurality of PLC networks;

[0024] The specific operation process is as follows:

[0025] Web interface side:

[0026] S1: Start a file transfer service and prepare to accept the login connection request from the client (PLC);

[0027] S2: After the remote maintenance personnel modify the logic, convert the logic of the maintenance personnel into a c language file in the agreed format;

[0028] S3: Compile the above c language file into a .so file. If there is an error in the compilation, the maintenance personnel will be prompted to modify it until the compilation is passed;

[0029] S4: Send the file transfer command to the PLC, and then send the .so file to the PLC.

[0030] PLC:

[0031] S1: Start the service for accepting files, ...

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PUM

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Abstract

The invention discloses a method for remotely modifying a PLC program by WEB, which comprises a Web end, a router and a plurality of PLCs; the Web end is in network connection with the router, and therouter is in network connection with the plurality of PLCs. The function module can support maintenance personnel to easily modify a PLC program at a Web end; a large-scale PLC development tool doesnot need to be installed at an operation end, maintenance personnel do not need to have strong PLC professional knowledge; system maintenance personnel are supported to quickly edit the PLC program online, compile the program into so files, and download the so files and embed the so files into the PLC for operation; operation is convenient, execution efficiency is high, timeliness of PLC projectmaintenance is guaranteed, and meanwhile maintenance cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of PLC expansion, in particular to a method for modifying PLC programs remotely via WEB. Background technique [0002] PLC is a programmable logic controller, which is a digital computing operation electronic system specially designed for application in industrial environments. It uses a programmable memory to store instructions for performing logic operations, sequence control, timing, counting, and arithmetic operations, and controls various types of mechanical equipment or production through digital or analog input and output. process. [0003] Web interface: It is the operating platform for maintenance personnel (usually customers). Connect with the PLCs of various work sites through the network, collect the work data of each site, and control the PLC status of each site. [0004] Dynamic Link Library: Allows a process to call functions that are not part of its executable code. The executable code fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05G06F8/41H04L29/08
CPCG05B19/058G06F8/41H04L67/025H04L67/02
Inventor 韦耀东章旭君
Owner 南京东唯电子科技有限公司