推荐回答（1个）
如果你现在还没有硬件，需要确定好你准备用哪种方式来让PLC与变频器通讯----网络通讯还是硬接线；如果使用网络通讯，准备用哪种通讯协议（例如你对Modbus比较熟悉或你工作的现场用modbus最多，就可以考虑用modbus）；硬接线的方式最简单，但能够实现的功能较少，接线麻烦且占用较多的PLC输入输出点。如果已经有了硬件，直接跳到步骤3
根据需求挑选并采购硬件
详细阅读说明书（非常重要，特别是通讯参数设定的相关章节）
根据说明书接线
上电调试
有问题可以与厂家技术人员联系解决
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