Network communication method for software maintenance of nuclear power plant dcs platform engineer station

Abstract

The invention discloses a network communication method for software maintenance of an engineer station of a DCS platform of a nuclear power plant. An IOCP network module is used to construct a network module of the engineer station; S1, a main thread is opened by a process management module of the engineer station; S2, an application program module of the main interface of the engineer station is generated Main interface event request; when data is received: S3. When the external master station initiates a data reception event to the IOCP network module, the IOCP network module receives the return data from the current master station in an interrupted manner and buffers it in the system cache. Check the status of the completion port of the IOCP network module. When the status of the completion port is that the network operation arrives, a data reception event request is generated; S4, the main interface event request and the data reception event request are added to the event queue of the same main thread in sequence. , the engineer station executes the event requests in the thread queue in sequence, and when the main thread executes the data receiving event request, it reads the corresponding return data from the system cache.

Description

technical field [0001] The invention relates to the field of nuclear power data interaction, in particular to a software maintenance network communication method for a DCS platform engineer station of a nuclear power plant. Background technique [0002] In the field of nuclear power plant safety-level DCS, the engineer station plays a key role, responsible for downloading the target file generated by the configuration to the main controller, and monitoring the operating status and data in the main controller. The design and technical application of a good communication module are very important for the stability and maintainability of the communication operation of the engineering station. [0003] In practical application scenarios, the engineering station is required to download and monitor multiple sites. A possible design method is to use multi-threading in network communication, and each individual network sending and receiving needs a thread to support. In terms of e...

AI Technical Summary

Problems solved by technology

In terms of engineering applications with too many sites, the engineering station software needs to open countless threads, which brings about low program efficiency caused by frequent switching of multiple threads in the engineering station software and mutual exclusion locks for shared data during data sending and receiving. make maintenance difficult

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