Generally, what protocol and communication method is used for communication between the MCC backend and the DCS?
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Generally, what protocol and communication method are used for signal communication from the MCC backend to the DCS? If 1,000 motors transmit signals to the DCS, how many communication cards does the DCS need, and how should they be selected? Domestic DCS systems such as Zhongkong and HollySys, etc
The low-cost option is RS 485 Modbus communication, while the high-cost option is Profibus-DP. The number of slaves that can be connected per card varies among different manufacturers; 1000 in your case is quite high, and signal latency is likely to occur.
What was said upstairs is correct. MODBUS, PROFITBUS-DP: Slow communication. Wired is fast.