6SE6420-2UD15-5AA0

西门子 300 plc 通过 MPI 通讯卡与组态王进行通讯时，能否实现双设备冗余的功能？

可以实现。

）一个 cp5611 卡可以连接两台 s7300plc（使用西门子厂家提供的可编程插头来实现）；

2）在组态王软件中建立两个 s7300plc，设备地址分别设备为 7.2 和 8.2（设备地址根据实际设备来设置），小数点前面的号指 plc 的地址，后面是 cpu 所在的槽号。这两个 plc 在 STEP7 编程软件中是单独定义的，所以除 plc 地址不一样，槽号是一样的；

3）在组态王中只须定义主设备的变量即可。

如果您发现其他供货商为相同产品提供更为低廉的价格，

我们也愿意参照其价格向您提供进一步的折扣。只要您诚心购买，

如果还有其他任何问题，请随时与我们联系。

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您或许会在我们的资料中找到您需要的备品备件，在任何时间，我们都欢迎您对我们产品提出宝贵的建议。

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