MOD1/1X217-001

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。

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