Remote transmission of DCS control station signals
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For the remote transmission of signals from the DCS control station, are two optical fibers required? This is because there is one control station with two redundant control cards, and each card has two network interfaces. Has anyone ever encountered the situation of how to communicate remotely?
At long distances, fiber optics are definitely necessary; switches that have both optical ports and network ports can also be used in between.
The signals from the control layer are transmitted over long distances; different manufacturers use various methods to achieve this, but in general, electrical signals can be converted into optical signals for long-distance transmission.