The application of hardwiring and communication in power plant design
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I have a question: in power plant design, when the operator station sends commands to certain important actuators, there is communication between the operator station and the DCS cabinet; whereas the connection between the DCS and the local actuators is a hardwired connection. It is said that hardwiring is used to ensure stable signal transmission; then how can we ensure the stability of the communication signals between the operator station and the DCS cabinet?
Reliable operation station computer, reliable operation station communication card, reliable communication cables, reliable DCS communication module, plus redundant communication between the operation station and the DCS. I think these are enough!
The question posed by the original poster makes it impossible for anyone to answer.
In principle, the operator station and the DCS/PLC control cabinet are integrated with each other, representing the relationship between a \"higher-level computer\" and a \"lower-level computer\". This can be ensured through a redundant structure. If more critical functions such as emergency stop are required, the hardwired emergency stop system of the aforementioned system can be considered for bypassing.