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C# 读取西门子S7系列PLC教程及源码

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By Ipaddress NotAvailable, Int Start ByteAdr, Public Enum DataType, VarType varType
| CSDN
创建 PLC 实例，连接和断开连接 若要创建驱动程序的实例，需要使用此构造函数： public Plc(CpuType cpu, string ip, Int16 rack, Int16 slot) CPU：这指定您要连接到的 CPU。支持的 CPU 包括： public enum CpuType { S7200 = 0, S7300 = 10, S7400 = 20, S71200 = 30, S71500 = 40, } ip：指定 CPU 或外部以太网卡的 IP 地址 机架：它包含PLC的机架，您可以在Step7的硬件配置中找到 插槽：这是CPU的插槽，您可以在Step7的硬件配置中找到 例： 此代码为 IP 地址为 7.300.127.0 的 S0-1 plc 创建一个 Plc 对象，为 CPU 位于插槽 0 的机架 2 中的 plc 创建一个 Plc 对象： Plc plc = new Plc(CpuType.S7300, "127.0.0.1", 0, 2); 连接到 PLC 例如，这行代码打开连接： 断开与 PLC 的连接 例如，这将关闭连接： 错误处理...
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