Equipment based on VPN technology and method and system for remotely maintaining PLC

A technology of equipment and technology, which is applied in the field of remote maintenance PLC for equipment based on VPN technology

Active Publication Date: 2020-07-07
北京航天智造科技发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With VPN technology, when the PLC needs to be maintained by technicians such as configuration changes or failures, a virtual private network can be quickly built between the PLC and technicians to facili

Method used

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  • Equipment based on VPN technology and method and system for remotely maintaining PLC
  • Equipment based on VPN technology and method and system for remotely maintaining PLC
  • Equipment based on VPN technology and method and system for remotely maintaining PLC

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Embodiment Construction

[0037] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below through specific embodiments and accompanying drawings.

[0038] The invention provides a device based on VPN technology, which is plug-and-play and provides multiple interfaces for accessing the Ethernet. The device is used as an OPENVPN client to connect to an OPENVPN server.

[0039] The device has a WAN interface (wide area network interface), which supports DHCP or static IP mode to connect the device to Ethernet; a LAN interface (local area network interface), which is directly connected to the PLC product or connected to the LAN switch connected to the PLC product, It can directly access PLC products; a wireless communication module supports the expansion of 2 / 3 / 4G wireless modules. When the on-site LAN does not have the ability to access Ethernet, the device can be connected to Ethernet through a...

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PUM

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Abstract

The invention relates to equipment based on a VPN technology and a method and system for remotely maintaining a PLC. The equipment based on the VPN technology has the characteristic of rapid deployment, is of a plug-and-play type, and can realize remote maintenance of the PLC only by informing technicians of equipment ID numbers and IP addresses of the PLC by field personnel and matching the technicians with remote client software. The equipment does not need to be configured, and if a field local area network does not have the capability of accessing the Ethernet, the equipment can access anoperator network and is connected with a VPN server to establish a virtual tunnel. According to the invention, seamless access can be realized efficiently and quickly without changing the original network environment; automatic connection can be achieved without complex configuration, the technical requirements for field personnel can be reduced, and simplicity and convenience are achieved; through the scheme, technicians can quickly troubleshoot problems, so that user requirements are met, and the problem of pain spots of users is solved.

Description

technical field [0001] The invention belongs to the field of information technology, and in particular relates to a device based on VPN technology and a method and system for remotely maintaining a PLC using the device. Background technique [0002] PLC (Programmable Logic Controller, Programmable Logic Controller) is a digital operation controller with a microprocessor for automatic control, which can load control instructions into memory at any time for storage and execution. The programmable controller is composed of functional units such as CPU, instruction and data memory, input / output interface, power supply, and digital-to-analog conversion. The programmable logic controller used in the industry is already quite or close to the host of a compact computer, and its advantages in scalability and reliability make it widely used in various current industrial control fields. [0003] Because of its high programming reliability, strong anti-interference ability, flexible co...

Claims

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Application Information

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IPC IPC(8): G05B19/05
CPCG05B19/054G05B2219/15006Y02P90/02
Inventor 李振超马凯蒂石伟庞鑫宇刘琪郑强程仕通
Owner 北京航天智造科技发展有限公司
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