"# S7.Net\uff1a\u4e13\u4e3a\u897f\u95e8\u5b50PLC\u8bbe\u8ba1\u7684\u4ee5\u592a\u7f51\u901a\u4fe1\u9a71\u52a8\n\n> 2024-05-10 | 2024-05-10\n> https:\/\/www.modbus.cn\/en\/28137.html\n\n**Modbus\u7f16\u7a0b\u5f00\u53d1**\n\n---\n\n**\u6982\u8ff0**\n\nS7.Net\u662f\u4e00\u4e2a\u4e13\u4e3a\u897f\u95e8\u5b50PLC\u8bbe\u8ba1\u7684PLC\u9a71\u52a8\u7a0b\u5e8f\uff0c\u4ec5\u652f\u6301\u901a\u8fc7\u4ee5\u592a\u7f51\u8fde\u63a5\u3002\u8fd9\u610f\u5473\u7740\u60a8\u7684PLC\u5fc5\u987b\u5177\u5907Profinet CPU\u6216Profinet\u5916\u90e8\u5361\uff08\u5982CPxxx\u5361\uff09\u3002S7.Net\u5b8c\u5168\u4f7f\u7528C#\u7f16\u5199\uff0c\u56e0\u6b64\u60a8\u53ef\u4ee5\u8f7b\u677e\u5730\u8fdb\u884c\u8c03\u8bd5\uff0c\u800c\u65e0\u9700\u5904\u7406\u672c\u5730DLL\u3002\n\n**\u652f\u6301\u7684PLC\u578b\u53f7**\n\nS7.Net\u4e0e\u4ee5\u4e0b\u578b\u53f7\u7684\u897f\u95e8\u5b50PLC\u517c\u5bb9\uff1aS7-200\u3001S7-300\u3001S7-400\u3001S7-1200\u548cS7-1500\u3002\n\n**\u5f00\u59cb\u4f7f\u7528S7.Net**\n\n\u8981\u5f00\u59cb\u4f7f\u7528S7.Net\uff0c\u60a8\u9700\u8981\u4e0b\u8f7d\u5e76\u5305\u542bS7.Net.dll\u5230\u60a8\u7684\u9879\u76ee\u4e2d\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u4e0b\u8f7dNuGet\u5305\u6216\u4e0b\u8f7d\u6e90\u4ee3\u7801\u5e76\u7f16\u8bd1\u6765\u5b9e\u73b0\u3002\n\n**\u521b\u5efaPLC\u5b9e\u4f8b\u3001\u8fde\u63a5\u4e0e\u65ad\u5f00**\n\n\u521b\u5efa\u9a71\u52a8\u7a0b\u5e8f\u5b9e\u4f8b\u65f6\uff0c\u60a8\u9700\u8981\u4f7f\u7528\u4ee5\u4e0b\u6784\u9020\u51fd\u6570\uff1a\n\n```\npublic Plc(CpuType cpu, string ip, Int16 rack, Int16 slot)\n```\n\n- `cpu`\uff1a\u6307\u5b9a\u60a8\u8981\u8fde\u63a5\u7684CPU\u7c7b\u578b\u3002\u652f\u6301\u7684CPU\u7c7b\u578b\u6709\uff1a\n\n```\n  public enum CpuType {\n      S7200 = 0,\n      S7300 = 10,\n      S7400 = 20,\n      S71200 = 30,\n      S71500 = 40,\n  }\n```\n\n- `ip`\uff1a\u6307\u5b9aCPU\u6216\u5916\u90e8\u4ee5\u592a\u7f51\u5361\u7684IP\u5730\u5740\u3002\n\n- `rack`\uff1a\u5305\u542bPLC\u7684\u673a\u67b6\u53f7\uff0c\u60a8\u53ef\u4ee5\u5728Step7\u7684\u786c\u4ef6\u914d\u7f6e\u4e2d\u627e\u5230\u3002\n\n- `slot`\uff1a\u8fd9\u662fCPU\u7684\u63d2\u69fd\u53f7\uff0c\u540c\u6837\u53ef\u4ee5\u5728Step7\u7684\u786c\u4ef6\u914d\u7f6e\u4e2d\u627e\u5230\u3002\n\n\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u4e3aIP\u5730\u5740\u4e3a127.0.0.1\u7684S7-300 PLC\u521b\u5efa\u4e86\u4e00\u4e2aPLC\u5bf9\u8c61\uff0cPLC\u4f4d\u4e8e0\u53f7\u673a\u67b6\uff0cCPU\u4f4d\u4e8e2\u53f7\u63d2\u69fd\uff1a\n\n```\nPlc plc = new Plc(CpuType.S7300, "127.0.0.1", 0, 2);\n```\n\n**\u8fde\u63a5\u5230PLC**\n\n```\npublic void Open()\n```\n\n\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u884c\u6253\u5f00\u8fde\u63a5\uff1a\n\n```\nplc.Open();\n```\n\n**\u4ecePLC\u65ad\u5f00\u8fde\u63a5**\n\n```\npublic void Close()\n```\n\n\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u5173\u95ed\u8fde\u63a5\uff1a\n\n```\nplc.Close();\n```\n\n**\u9519\u8bef\u5904\u7406**\n\n\u4efb\u4f55\u65b9\u6cd5\u90fd\u53ef\u80fd\u56e0\u4e3a\u5404\u79cd\u9519\u8bef\u800c\u5f15\u53d1`PlcException`\u3002\u60a8\u5e94\u8be5\u5b9e\u73b0\u9002\u5f53\u7684\u9519\u8bef\u5904\u7406\u3002`PlcException`\u63d0\u4f9b\u4e86\u4e00\u4e2a`ErrorCode`\u548c\u4e00\u4e2a\u9002\u5f53\u7684\u9519\u8bef\u6d88\u606f\u3002\n\n\u4ee5\u4e0b\u662f\u9519\u8bef\u7c7b\u578b\u7684\u679a\u4e3e\uff1a\n\n```\npublic enum ErrorCode\n{\n    NoError = 0,\n    WrongCPU_Type = 1,\n    ConnectionError = 2,\n    IPAddressNotAvailable, \n    WrongVarFormat = 10,\n    WrongNumberReceivedBytes = 11, \n    SendData = 20,\n    ReadData = 30, \n    WriteData = 50\n}\n```\n\n**\u68c0\u67e5PLC\u53ef\u7528\u6027**\n\n\u8981\u68c0\u67e5PLC\u662f\u5426\u53ef\u7528\uff08\u6253\u5f00\u4e00\u4e2aSocket\uff09\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5c5e\u6027\uff1a\n\n```\npublic bool IsAvailable\n```\n\n\u5f53\u60a8\u68c0\u67e5\u6b64\u5c5e\u6027\u65f6\uff0c\u9a71\u52a8\u7a0b\u5e8f\u5c06\u5c1d\u8bd5\u8fde\u63a5\u5230PLC\uff0c\u5e76\u5728\u80fd\u591f\u8fde\u63a5\u65f6\u8fd4\u56detrue\uff0c\u5426\u5219\u8fd4\u56defalse\u3002\n\n**\u68c0\u67e5PLC\u8fde\u63a5**\n\n\u68c0\u67e5PLC\u8fde\u63a5\u5f88\u7b80\u5355\uff0c\u56e0\u4e3a\u60a8\u9700\u8981\u68c0\u67e5PC\u5957\u63a5\u5b57\u662f\u5426\u5df2\u8fde\u63a5\uff0c\u8fd8\u8981\u68c0\u67e5PLC\u662f\u5426\u4ecd\u7136\u8fde\u63a5\u5728\u5957\u63a5\u5b57\u7684\u53e6\u4e00\u7aef\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u60a8\u9700\u8981\u68c0\u67e5\u7684\u5c5e\u6027\u662f\uff1a\n\n```\npublic bool IsConnected\n```\n\n\u60a8\u53ef\u4ee5\u5728\u8c03\u7528`Open()`\u65b9\u6cd5\u5e76\u6210\u529f\u540e\u68c0\u67e5\u6b64\u5c5e\u6027\uff0c\u4ee5\u67e5\u770b\u8fde\u63a5\u662f\u5426\u4ecd\u7136\u6d3b\u8dc3\u3002\n\n**\u8bfb\u53d6\u5b57\u8282\/\u5199\u5165\u5b57\u8282**\n\n\u8be5\u5e93\u63d0\u4f9b\u4e86\u591a\u79cd\u8bfb\u53d6\u53d8\u91cf\u7684\u65b9\u6cd5\u3002\u6700\u57fa\u672c\u4e14\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f`ReadBytes`\u3002\n\n```\npublic byte[] ReadBytes(DataType dataType, int db, int startByteAdr, int count)\n\npublic void WriteBytes(DataType dataType, int db, int startByteAdr, byte[] value)\n```\n\n\u6b64\u65b9\u6cd5\u4ece\u7ed9\u5b9a\u7684\u5185\u5b58\u4f4d\u7f6e\u8bfb\u53d6\u60a8\u6307\u5b9a\u7684\u6240\u6709\u5b57\u8282\u3002\u5982\u679c\u5b57\u8282\u6570\u8d85\u8fc7\u4e86\u5355\u6b21\u8bf7\u6c42\u53ef\u4ee5\u4f20\u8f93\u7684\u6700\u5927\u5b57\u8282\u6570\uff0c\u6b64\u65b9\u6cd5\u4f1a\u81ea\u52a8\u5904\u7406\u591a\u4e2a\u8bf7\u6c42\u3002\n\n- `dataType`\uff1a\u60a8\u5fc5\u987b\u4f7f\u7528\u679a\u4e3e`DataType`\u6307\u5b9a\u5185\u5b58\u4f4d\u7f6e\uff1a\n\n```\n  public enum DataType\n  {\n      Input = 129,\n      Output = 130,\n      Memory = 131,\n      DataBlock = 132,\n      Timer = 29,\n      Counter = 28\n  }\n```\n\n- `db`\uff1adataType\u7684\u5730\u5740\uff0c\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u60f3\u8bfb\u53d6DB1\uff0c\u5219\u6b64\u5b57\u6bb5\u4e3a\u201c1\u201d\uff1b\u5982\u679c\u60a8\u60f3\u8bfb\u53d6T45\uff0c\u5219\u6b64\u5b57\u6bb5\u4e3a45\u3002\n\n- `startByteAdr`\uff1a\u60a8\u8981\u8bfb\u53d6\u7684\u7b2c\u4e00\u4e2a\u5b57\u8282\u7684\u5730\u5740\uff0c\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u60f3\u8bfb\u53d6DB1.DBW200\uff0c\u5219\u6b64\u4e3a200\u3002\n\n- `count`\uff1a\u5305\u542b\u60a8\u60f3\u8981\u8bfb\u53d6\u7684\u5b57\u8282\u6570\u3002\n\n- `value[]`\uff1a\u8981\u4ecePLC\u8bfb\u53d6\u7684\u5b57\u8282\u6570\u7ec4\u3002\n\n\u793a\u4f8b\uff1a\u6b64\u65b9\u6cd5\u8bfb\u53d6DB1\u7684\u524d200\u4e2a\u5b57\u8282\uff1a\n\n```\nvar bytes = plc.ReadBytes(DataType.DataBlock, 1, 0, 200);\n```\n\n**\u8bfb\u53d6\u548c\u89e3\u7801\/\u5199\u5165\u5df2\u89e3\u7801**\n\n\u6b64\u65b9\u6cd5\u5141\u8bb8\u60a8\u8bfb\u53d6\u5e76\u63a5\u6536\u57fa\u4e8e\u63d0\u4f9b\u7684varType\u7684\u5df2\u89e3\u7801\u7ed3\u679c\u3002\u8fd9\u5728\u60a8\u8bfb\u53d6\u591a\u4e2a\u76f8\u540c\u7c7b\u578b\u7684\u5b57\u6bb5\u65f6\u975e\u5e38\u6709\u7528\uff08\u4f8b\u598220\u4e2a\u8fde\u7eed\u7684DBW\uff09\u3002\u5982\u679c\u60a8\u6307\u5b9aVarType.Byte\uff0c\u5b83\u4e0eReadBytes\u5177\u6709\u76f8\u540c\u7684\u529f\u80fd\u3002\n\n```\npublic object Read(DataType dataType, int db, int startByteAdr, VarType varType, int varCount)\n\npublic void Write(DataType dataType, int db, int startByteAdr, object value)\n```\n\n- `dataType`\uff1a\u60a8\u5fc5\u987b\u4f7f\u7528\u679a\u4e3e`DataType`\u6307\u5b9a\u5185\u5b58\u4f4d\u7f6e\u3002\n\n- `db`\uff1adataType\u7684\u5730\u5740\uff0c\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u60f3\u8bfb\u53d6DB1\uff0c\u5219\u6b64\u5b57\u6bb5\u4e3a\u201c1\u201d\uff1b\u5982\u679c\u60a8\u60f3\u8bfb\u53d6T45\uff0c\u5219\u6b64\u5b57\u6bb5\u4e3a45\u3002\n\n- `startByteAdr`\uff1a\u60a8\u8981\u8bfb\u53d6\u7684\u7b2c\u4e00\u4e2a\u5b57\u8282\u7684\u5730\u5740\uff0c\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u60f3\u8bfb\u53d6DB1.DBW200\uff0c\u5219\u6b64\u4e3a200\u3002\n\n- `varType`\uff1a\u6307\u5b9a\u60a8\u60f3\u8981\u5c06\u5b57\u8282\u8f6c\u6362\u4e3a\u7684\u6570\u636e\u3002\n\n```\n  public enum VarType\n  {\n      Bit,\n      Byte,\n      Word,\n      DWord,\n      Int,\n      DInt,\n      Real,\n      String,\n      StringEx,\n      Timer,\n      Counter\n  }\n```\n\n- `count`\uff1a\u5305\u542b\u60a8\u60f3\u8981\u8bfb\u53d6\u7684\u53d8\u91cf\u6570\u91cf\u3002\n\n- `value`\uff1a\u8981\u5199\u5165PLC\u7684\u503c\u6570\u7ec4\u3002\u5b83\u53ef\u4ee5\u662f\u5355\u4e2a\u503c\u6216\u6570\u7ec4\uff0c\u53ea\u662f\u8bf7\u8bb0\u4f4f\u7c7b\u578b\u662f\u552f\u4e00\u7684\uff08\u4f8b\u5982\uff0cdouble\u6570\u7ec4\uff0cint\u6570\u7ec4\uff0cshorts\u6570\u7ec4\u7b49\uff09\u3002\n\n\u793a\u4f8b\uff1a\u6b64\u65b9\u6cd5\u8bfb\u53d6DB1\u7684\u524d20\u4e2aDWord\uff1a\n\n```\nvar dwords = plc.Read(DataType.DataBlock, 1, 0, VarType.DWord, 20);\n```\n\n**\u8bfb\u53d6\u5355\u4e2a\u53d8\u91cf\/\u5199\u5165\u5355\u4e2a\u53d8\u91cf**\n\n\u6b64\u65b9\u6cd5\u901a\u8fc7\u89e3\u6790\u5b57\u7b26\u4e32\u5e76\u8fd4\u56de\u6b63\u786e\u7684\u7ed3\u679c\uff0c\u4ecePLC\u8bfb\u53d6\u5355\u4e2a\u53d8\u91cf\u3002\u867d\u7136\u8fd9\u662f\u6700\u7b80\u5355\u7684\u5165\u95e8\u65b9\u6cd5\uff0c\u4f46\u7531\u4e8e\u9a71\u52a8\u7a0b\u5e8f\u4e3a\u6bcf\u4e2a\u53d8\u91cf\u53d1\u9001TCP\u8bf7\u6c42\uff0c\u56e0\u6b64\u975e\u5e38\u4f4e\u6548\u3002\n\n```\npublic object Read(string variable)\n\npublic void Write(string variable, object value)\n```\n\n- `variable`\uff1a\u901a\u8fc7\u4f7f\u7528\u5b57\u7b26\u4e32\u5982\u201cDB1.DBW20\u201d\uff0c\u201cT45\u201d\uff0c\u201cC21\u201d\uff0c\u201cDB1.DBD400\u201d\u7b49\u6765\u6307\u5b9a\u8981\u8bfb\u53d6\u7684\u53d8\u91cf\u3002\n\n\u793a\u4f8b\uff1a\u8fd9\u8bfb\u53d6\u53d8\u91cfDB1.DBW0\u3002\u7ed3\u679c\u5fc5\u987b\u8f6c\u6362\u4e3aushort\u4ee5\u83b7\u5f97C#\u4e2d\u6b63\u786e\u768416\u4f4d\u683c\u5f0f\u3002\n\n```\nushort result = (ushort)plc.Read("DB1.DBW0");\n```\n\n**\u8bfb\u53d6\u7ed3\u6784\u4f53\/\u5199\u5165\u7ed3\u6784\u4f53**\n\n\u6b64\u65b9\u6cd5\u4ece\u6307\u5b9a\u7684DB\u8bfb\u53d6\u6240\u6709\u5b57\u8282\uff0c\u4ee5\u586b\u5145C#\u4e2d\u7684\u7ed3\u6784\u4f53\uff0c\u5e76\u8fd4\u56de\u5305\u542b\u503c\u7684\u7ed3\u6784\u4f53\u3002\u5f53\u60a8\u60f3\u8981\u8bfb\u53d6\u5355\u4e2a\u6570\u636e\u5757\u4e2d\u7684\u591a\u4e2a\u53d8\u91cf\u65f6\uff0c\u5efa\u8bae\u4f7f\u7528\u5b83\u3002\n\n\u201c\u8bfb\u53d6\u7ed3\u6784\u4f53\u201d\u548c\u201c\u5199\u5165\u7ed3\u6784\u4f53\u201d\u65b9\u6cd5\u4e0d\u652f\u6301\u5b57\u7b26\u4e32\u3002\n\n```\npublic object ReadStruct(Type structType, int db, int startByteAdr = 0)\n\npublic void WriteStruct(object structValue, int db, int startByteAdr = 0)\n```\n\n- `structType`\uff1a\u8981\u8bfb\u53d6\u7684\u7ed3\u6784\u4f53\u7c7b\u578b\uff0c\u4f8b\u5982\uff1atypeof(MyStruct)\n\n- `db`\uff1a\u8981\u8bfb\u53d6\u7684DB\u7684\u7d22\u5f15\n\n- `startByteAdr`\uff1a\u6307\u5b9a\u8981\u8bfb\u53d6\u7684\u5b57\u8282\u7684\u7b2c\u4e00\u4e2a\u5730\u5740\uff08\u9ed8\u8ba4\u4e3a\u96f6\uff09\u3002\n\n\u793a\u4f8b\uff1a\u5728PLC\u4e2d\u5b9a\u4e49\u4e00\u4e2aDataBlock\uff0c\u7136\u540e\u5728.Net\u5e94\u7528\u7a0b\u5e8f\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u7c7b\u4f3c\u4e8ePLC\u4e2dDB\u7684\u7ed3\u6784\u4f53\uff1a\n\n```\npublic struct testStruct\n{\n    public bool varBool0;\n    public bool varBool1;\n    public bool varBool2;\n    public bool varBool3;\n    public bool varBool4;\n    public bool varBool5;\n    public bool varBool6;\n    public byte varByte0;\n    public byte varByte1;\n    public ushort varWord0;\n    public float varReal0;\n    public bool varBool7;\n    public float varReal1;\n    public byte varByte2;\n    public UInt32 varDWord;\n}\n```\n\n\u7136\u540e\u6dfb\u52a0\u4ee3\u7801\u4ee5\u8bfb\u53d6\u6216\u5199\u5165\u5b8c\u6574\u7684\u7ed3\u6784\u4f53\uff1a\n\n```\n\/\/ \u4ece\u8d77\u59cb\u5730\u57400\u8bfb\u53d6DataBlock 1\u4e2d\u7684\u7ed3\u6784\u4f53\ntestStruct myTestStruct = (testStruct) plc.ReadStruct(typeof(testStruct), 1, 0);\n```\n\n**\u8bfb\u53d6\u7c7b\/\u5199\n\n\u5165\u7c7b**\n\n\u6b64\u65b9\u6cd5\u4ece\u6307\u5b9a\u7684DB\u8bfb\u53d6\u6240\u6709\u5b57\u8282\uff0c\u4ee5\u586b\u5145C#\u4e2d\u7684\u7c7b\u3002\u7c7b\u4f5c\u4e3a\u5f15\u7528\u4f20\u9012\uff0c\u4f7f\u7528\u53cd\u5c04\u5206\u914d\u503c\u3002\u5f53\u60a8\u60f3\u8981\u8bfb\u53d6\u5355\u4e2a\u6570\u636e\u5757\u4e2d\u7684\u591a\u4e2a\u53d8\u91cf\u65f6\uff0c\u5efa\u8bae\u4f7f\u7528\u5b83\u3002\n\n\u201c\u8bfb\u53d6\u7c7b\u201d\u548c\u201c\u5199\u5165\u7c7b\u201d\u65b9\u6cd5\u4e0d\u652f\u6301\u5b57\u7b26\u4e32\u3002\n\n```\npublic void ReadClass(object sourceClass, int db, int startByteAdr = 0)\n\npublic void WriteClass(object classValue, int db, int startByteAdr = 0)\n```\n\n- `sourceClass`\uff1a\u60a8\u60f3\u8981\u5206\u914d\u503c\u7684\u7c7b\u7684\u5b9e\u4f8b\n\n- `db`\uff1a\u8981\u8bfb\u53d6\u7684DB\u7684\u7d22\u5f15\n\n- `startByteAdr`\uff1a\u6307\u5b9a\u8981\u8bfb\u53d6\u7684\u5b57\u8282\u7684\u7b2c\u4e00\u4e2a\u5730\u5740\uff08\u9ed8\u8ba4\u4e3a\u96f6\uff09\u3002\n\n\u793a\u4f8b\uff1a\u5728PLC\u4e2d\u5b9a\u4e49\u4e00\u4e2aDataBlock\uff0c\u7136\u540e\u5728.Net\u5e94\u7528\u7a0b\u5e8f\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u7c7b\u4f3c\u4e8ePLC\u4e2dDB\u7684\u7c7b\uff1a\n\n```\npublic class TestClass\n{\n    public bool varBool0 { get; set;}\n    public bool varBool1 { get; set;}\n    public bool varBool2 { get; set;}\n    public bool varBool3 { get; set;}\n    public bool varBool4 { get; set;}\n    public bool varBool5 { get; set;}\n    public bool varBool6 { get; set;}\n\n    public byte varByte0 { get; set;}\n    public byte varByte1 { get; set;}\n\n    public ushort varWord0 { get; set;}\n\n    public float varReal0 { get; set;}\n    public bool varBool7 { get; set;}\n    public float varReal1 { get; set;}\n\n    public byte varByte2 { get; set;}\n    public UInt32 varDWord { get; set;}\n}\n```\n\n\u7136\u540e\u6dfb\u52a0\u4ee3\u7801\u4ee5\u8bfb\u53d6\u6216\u5199\u5165\u5b8c\u6574\u7684\u7c7b\uff1a\n\n```\n\/\/ \u4ece\u8d77\u59cb\u5730\u57400\u8bfb\u53d6DataBlock 1\u4e2d\u7684\u7c7b\nTestClass myTestClass = new TestClass();\nplc.ReadClass(myTestClass, 1, 0);\n```\n\n**\u8bfb\u53d6\u591a\u4e2a\u53d8\u91cf**\n\n\u6b64\u65b9\u6cd5\u5728\u5355\u4e2a\u8bf7\u6c42\u4e2d\u8bfb\u53d6\u591a\u4e2a\u53d8\u91cf\u3002\u53d8\u91cf\u53ef\u4ee5\u4f4d\u4e8e\u76f8\u540c\u6216\u4e0d\u540c\u7684\u6570\u636e\u5757\u4e2d\u3002\n\n```\npublic void Plc.ReadMultibleVars(List<DataItem> dataItems);\n```\n\n- `List<>`\uff1a\u60a8\u5fc5\u987b\u6307\u5b9a\u5305\u542b\u6240\u6709\u8981\u8bfb\u53d6\u7684\u6570\u636e\u9879\u7684DataItem\u5217\u8868\u3002\n\n\u793a\u4f8b\uff1a\u6b64\u65b9\u6cd5\u4ece\u6570\u636e\u5757\u4e2d\u8bfb\u53d6\u51e0\u4e2a\u53d8\u91cf\uff1a\n\n\u9996\u5148\u5b9a\u4e49\u6570\u636e\u9879\uff1a\n\n```\nprivate static DataItem varBit = new DataItem()\n{\n    DataType = DataType.DataBlock,\n    VarType = VarType.Bit,\n    DB = 83,\n    BitAdr = 0,\n    Count = 1,\n    StartByteAdr = 0,\n    Value = new object()\n};\n```\n\n\u2026\uff08\u4e2d\u95f4\u7701\u7565\u4e86\u4e0e\u4e0a\u6587\u91cd\u590d\u7684\u6570\u636e\u9879\u5b9a\u4e49\uff09\n\n\u7136\u540e\u5b9a\u4e49\u4e00\u4e2a\u5217\u8868\u6765\u5b58\u50a8DataItems\uff1a\n\n```\nprivate static List<DataItem> dataItemsRead = new List<DataItem>();\n```\n\n\u5c06\u6570\u636e\u9879\u6dfb\u52a0\u5230\u5217\u8868\u4e2d\uff1a\n\n```\ndataItemsRead.Add(varBit);\ndataItemsRead.Add(varByteArray);\ndataItemsRead.Add(varInt);\ndataItemsRead.Add(varReal);\ndataItemsRead.Add(varString);\ndataItemsRead.Add(varDateTime);\n```\n\n\u6253\u5f00PLC\u8fde\u63a5\u5e76\u7acb\u5373\u8bfb\u53d6\u9879\u76ee\u5217\u8868\uff1a\n\n```\nmyPLC.Open();\n\n\/\/ \u8bfb\u53d6\u53d8\u91cf\u5217\u8868\nmyPLC.ReadMultipleVars(dataItemsRead);\n\n\/\/ \u5173\u95ed\u8fde\u63a5\nmyPLC.Close();\n\n\/\/ \u8bbf\u95ee\u5217\u8868\u7684\u503c\nConsole.WriteLine("Int:" + dataItemsRead[2].Value);\n```\n\n**\u5199\u5165\u591a\u4e2a\u53d8\u91cf**\n\n\u6b64\u65b9\u6cd5\u5728\u5355\u4e2a\u8bf7\u6c42\u4e2d\u5199\u5165\u591a\u4e2a\u53d8\u91cf\u3002\n\n```\npublic void Plc.Write(Array[DataItem] dataItems);\n```\n\n- `Array[]` \u60a8\u5fc5\u987b\u6307\u5b9a\u5305\u542b\u6240\u6709\u8981\u5199\u5165\u7684\u9879\u76ee\u7684DataItem\u6570\u7ec4\u3002\n\n\u793a\u4f8b\uff1a\u6b64\u65b9\u6cd5\u5c06\u591a\u4e2a\u53d8\u91cf\u5199\u5165\u4e00\u4e2a\u6570\u636e\u5757\uff1a\n\n\u5b9a\u4e49\u6570\u636e\u9879\uff1a\n\n```\nprivate static DataItem varWordWrite = new DataItem()\n{\n    \/\/ ... (\u4e0e\u4e0a\u6587\u91cd\u590d\u7684\u6570\u636e\u9879\u5b9a\u4e49\u7701\u7565)\n};\n```\n\n\u2026\uff08\u4e2d\u95f4\u7701\u7565\u4e86\u4e0e\u4e0a\u6587\u91cd\u590d\u7684\u6570\u636e\u9879\u5b9a\u4e49\uff09\n\n\u4e3a\u6570\u636e\u9879\u5206\u914d\u503c\u3002\u6ce8\u610f\u4f7f\u7528\u6b63\u786e\u7684\u6570\u636e\u8f6c\u6362\uff0c\u4ee5\u9002\u5e94S7\u6570\u636e\u7c7b\u578b\uff1a\n\n```\nvarWordWrite.Value = (ushort)67;\nvarIntWrite.Value = (ushort)33;\nvarDWordWrite.Value = (uint)444;\nvarDIntWrite.Value = 6666;\nvarRealWrite.Value = 77.89;\nvarStringWrite.Value = "Writting";\n```\n\n\u7136\u540e\u5b9a\u4e49\u4e00\u4e2a\u5217\u8868\u6765\u5b58\u50a8\u6570\u636e\u9879\uff0c\u5e76\u5c06\u521b\u5efa\u7684\u9879\u76ee\u6dfb\u52a0\u5230\u5217\u8868\u4e2d\uff1a\n\n```\nprivate static List<DataItem> dataItemsWrite = new List<DataItem>();\n\n\/\/ \u5c06\u6570\u636e\u9879\u6dfb\u52a0\u5230\u8981\u5199\u5165\u7684\u6570\u636e\u9879\u5217\u8868\u4e2d\ndataItemsWrite.Add(varWordWrite);\ndataItemsWrite.Add(varIntWrite);\ndataItemsWrite.Add(varDWordWrite);\ndataItemsWrite.Add(varDIntWrite);\ndataItemsWrite.Add(varRealWrite);\ndataItemsWrite.Add(varStringWrite);\n```\n\n\u6700\u540e\uff0c\u6253\u5f00PLC\u8fde\u63a5\u5e76\u4e00\u6b21\u6027\u5199\u5165\u9879\u76ee\u3002\u4f7f\u7528.ToArray()\u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u6570\u7ec4\uff1a\n\n```\n\/\/ \u6253\u5f00\u8fde\u63a5\nmyPLC.Open();\n\n\/\/ \u5199\u5165\u9879\u76ee\nmyPLC.Write(dataItemsWrite.ToArray());\n\n\/\/ \u5173\u95ed\u8fde\u63a5\nmyPLC.Close();\n```\n\n\u8fd9\u7bc7\u6587\u7ae0\u63d0\u4f9b\u4e86S7.Net\u8f6f\u4ef6\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5305\u62ec\u5176\u529f\u80fd\u3001\u5982\u4f55\u5f00\u59cb\u4f7f\u7528\u3001\u5982\u4f55\u521b\u5efaPLC\u5b9e\u4f8b\u3001\u8fde\u63a5\u4e0e\u65ad\u5f00\u3001\u9519\u8bef\u5904\u7406\u3001\u68c0\u67e5PLC\u7684\u53ef\u7528\u6027\u548c\u8fde\u63a5\u72b6\u6001\u3001\u8bfb\u53d6\u548c\u5199\u5165\u5b57\u8282\u3001\u8bfb\u53d6\u548c\u5199\u5165\u7ed3\u6784\u4f53\u548c\u7c7b\u3001\u4ee5\u53ca\u5982\u4f55\u4e00\u6b21\u6027\u8bfb\u53d6\u548c\u5199\u5165\u591a\u4e2a\u53d8\u91cf\u3002\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u80fd\u5e2e\u52a9\u60a8\u66f4\u597d\u5730\u4e86\u89e3S7.Net\u3002\n\n---\n*modbus.cn*\n"