A method and system for remotely maintaining equipment through a connection table

Abstract

The invention discloses a method for remotely maintaining devices by using a connection table. The method comprises: a client sends a device replacement request to a cloud server; the cloud server copies the scenario connection table of an old device to a new device upon receiving the device replacement request; all scenarios using the old devices are queried, and the connection, related to the old devices, in the device connection tables corresponding to all queried scenarios is replaced with the connections of the new devices; a device replace notice is sent to all clients operating at least one queried scenario, wherein the device replacement notice carries a updated device connection table corresponding to the scenario; and after receiving the device replacement notice, the client automatically replaces the connection of the old devices in the scenario with the connection of the new device according to the updated device connection table. The present invention also discloses a corresponding system. The method can quickly and safely maintain the devices through the connection table, and improves working efficiency.

Description

technical field [0001] The present invention relates to the field of programmable logic controller (Programmable Logic Controller, PLC), in particular to a method and system for remotely maintaining equipment through a connection table. Background technique [0002] In the field of PLC on-site management, the existing technology can remotely access the scene screen or project of the device (hereinafter collectively called the scene). In this process, two different entities need to be involved, one of which is the device that provides data services, and the other is the Access to the screen of the device; in the configuration screen of the remote display scene, more than one used in the scene is often selected, but in actual use, there will inevitably be problems or maintenance requirements for the device. At this time, in order to ensure the continuity of the system , it may be necessary to replace the device. If the scene user cannot modify the device connection in time, it...

AI Technical Summary

Problems solved by technology

[0002] In the field of PLC on-site management, the existing technology can remotely access the scene screen or project of the device (hereinafter collectively called the scene). In this process, two different entities need to be involved, one of which is the device that provides data services, and the other is the Access to the screen of the device; in the configuration screen of the remote display scene, more than one used in the scene is often selected, but in actual use, there will inevitably be problems or maintenance requirements for the device. At this time, in order to ensure the continuity of the system , it may be necessary to replace the device. If the scene user cannot modify the device connection in time, it will cause confusion; in addition, if the scene user (such as a client user) needs to modify the device connection in the scene by himself, when there are many users and It is a very troublesome thing when it is distributed in different areas, which requires each user to know which device has been replaced, and at the same time need to modify the device connection in the corresponding scene in the client, which is extremely inefficient

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