S7 300 MPI 電纜方式是否支持通過 GPRS 和組態王通訊？
不支持。
組態王的 GPRS 通訊方式要求必須創建虛擬串口并通過此串口進行數據通訊。而對于 MPI 協議，我們的 MPI 驅動是通過調用西門子 PLC 的動態連接庫（s7onlinx.dll等）實現和 PLC 進行通訊的,并不是直接通過串口實現數據通訊。
其他類似調用方法的驅動，同樣也不支持 GPRS 連接。
組態王和多臺西門子S7-300、400 PLC 通過 DP 協議通訊時，設備地址應如何定義？
1）硬件連接：計算機中插入一塊CP5611（或CP5613)可實現將多個S7-300/400PLC連接在一條 DP 總線上。
2）DP 協議設置：所有 PLC 必須設置的 DP Slave 站， CP5611(或 CP5613)要求通過 Simatic net 設置的 DP * master 站；
3）組態王中設備地址定義：選擇 PLC/西門子/S7-200 系列(DP)/Profibus-DP ，設備地址固定為 1.1 (該地址與
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