Data storage method and device, storage medium and processor

Abstract

The invention discloses a data storage method and device, a storage medium and a processor. The method comprises the following steps: determining a master station and a slave station to be subjected to data interaction, acquiring information data generated by the master station and the slave station in a data interaction process, and storing information data in the slave station using a structurelinked list. The technical problem of repeated data storage is solved.

Description

technical field [0001] The present invention relates to the field of data storage, in particular to a data storage method, device, storage medium and processor. Background technique [0002] At present, in the field of industrial automation, as a slave station, it needs to exchange data with control systems of other manufacturers, and there may be a situation where a slave station performs data exchange with multiple master stations. In the general scenario of using the DNP3 protocol, one slave station corresponding to four master stations can meet the requirements. Therefore, in some development versions with simpler implementations, the slave station saves a copy of data for each master station. During the process, which part of the data to read from the slave station is determined according to the address of the master station. If the data is the same, four copies are simply copied and stored in the space corresponding to the address of the master station. [0003] Howev...

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Problems solved by technology

[0003] However, on the one hand, when the amount of data repetition is relatively high, the above method not only wastes memory space, but also is not conducive to program maintenance, and if the number of master stations that interact with slave stations increases, it may be necessary to update the written Large-scale modification of the program may also cause insufficient memory usage

On the other hand, if the two master stations that exchange data with the same slave station are configured with a redundant relationship, the master station that is configured as the master station performs data exchange under normal circumstances, and the master station that is configured as the backup station only sends heartbeat packets. When the communication of the active master station is disconnected, the master station configured as the backup should exchange data. At this time, because each master station has stored a piece of data in the program, when switching to the master station configured as the backup, the During data communication, the data previously sent in the master station configured as the main station will be sent again to the master station configured as the standby station, resulting in repeated data transmission. Therefore, the existing method is likely to cause technical problems of repeated data storage

[0004] For the above problems, no effective solution has been proposed

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