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Method and system for remote upgrade of PLC (Programmable Logic Controller)

A remote upgrade and upgrade command technology, applied in the field of remote upgrade PLC, can solve the problems of slow system data transmission, failure to meet the security and stability requirements of remote upgrade, etc., to ensure security and stability, and fast data transmission speed Effect

Active Publication Date: 2013-11-27
SUZHOU INOVANCE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the one-question-one-answer communication between DTUs, the data transmission of the entire system is slow, and the communication protocol between DTUs is simple, which cannot meet the security and stability requirements of remote upgrades.

Method used

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  • Method and system for remote upgrade of PLC (Programmable Logic Controller)
  • Method and system for remote upgrade of PLC (Programmable Logic Controller)
  • Method and system for remote upgrade of PLC (Programmable Logic Controller)

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Embodiment Construction

[0050] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments.

[0051] figure 2It is a schematic structural diagram of the system 100 for remotely upgrading PLC of the present invention, as figure 2 As shown, the system 100 of the present invention includes a terminal device 110 (eg, a computer), one or more PLCs 120 , a PLC upgrade server 130 and a PLC wireless extension unit 140 . Wherein, the PLC wireless extension unit 140 is connected with the debugging interface of the PLC 120 through a bus (for example, RS485 bus), the PLC wireless extension unit 140 is connected with the PLC upgrade server 130 through wireless communication (for example, 3G network), and the PLC upgrade server 130 is connected with the terminal equipment 110 communication connection (can be a wired connection or a wireless connection).

[0052] The PLC 120 has two working states and three working modes, the two working states are stop (s...

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Abstract

A method and a system for a remote upgrade of a PLC (Programmable Logic Controller) are provided by the invention. The system includes a terminal device, one or more PLCs, a PLC update server and a PLC wireless extension unit. The method comprises the steps: S1, the terminal device transmits an upgrade instruction to the PLC wireless extension unit through the PLC update server; S2, the PLC wireless extension unit downloads an upgrade file instructed by the upgrade instruction from the PLC update server; and S3, the PLC wireless extension unit uses the downloaded upgrade file to upgrade a target PLC instructed by the upgrade instruction. In the system, the data transmission speed is fast; and the use of safe, reliable protocol is allowed in the system to complete the remote upgrade of the PLC.

Description

technical field [0001] The present invention relates to the field of programmable logic controller (Programmable Logic Controller, PLC), and more specifically, relates to a method and system for remotely upgrading PLC. Background technique [0002] With the development of industrial control technology, the Industrial Internet of Things is playing an increasingly important role in monitoring the operation of industrial equipment technology in different regions and in various special environments. In the prior art, the PLC is locally connected to the computer through a serial port line or a USB line, and the user program and system program of the PLC are upgraded under the control of the computer, and the upgrade program is updated by operating the PLC program editing software. In this upgrade method, because the PLC is connected to the computer one-to-one, when a large number of PLCs need to be upgraded, the upgrade work is heavy, the operation is inconvenient, the efficiency...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L12/24G06F9/445
Inventor 袁海龙刘志立
Owner SUZHOU INOVANCE TECH CO LTD
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