使用VS2008开发OPC客户端程序

使用Rockwell的 RsiOPCAuto.dll

或者Siemens的 Interop.OPCSiemensDAAutomation.dll时，

若直接拷贝的Dll使用，需要注册后才可添加引用到VS2008.
注册：D:\>regsvr32 rsiopcauto.dll

已下为OPC读取标签的核心内容：

使用了Hash表存储标签位置对应标签多代表的含义：

代码如下：

App.config文件内容：
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <!--****OPC配置信息-->
    <!--OPC服务器名称-->
    <add key="OPCServerName" value="RSLinx Remote OPC Server" />
    <!--节点名称-->
    <add key="NodeName" value="GATEWAY02" />    
  </appSettings>
</configuration>

cs代码文件内容
//******OPC读取需要添加此引用********
//Siemens OPCAuto
//using OPCSiemensDAAutomation;

//Rockwell OPCAuto
using RsiOPCAuto;

    public partial class PZYS_StorQualityMonitor2 : Form

    {
        public PZYS_StorQualityMonitor2()
        {
            InitializeComponent();
        }

         //错误列表
        private static IList<Struct_ErrMessage> ErrList = new List<Struct_ErrMessage>();

        /***************OPC采集全局静态变量**************
         *使用局部变量不能持续刷新标签
         *全局静态变量可以持续刷新标签数据
         */
        //OPC服务器
        private static OPCServer OpcSvr = new OPCServerClass();

        //OPC组集
        private static OPCGroups OpcGps;

        //储柜标签组，仅使用一个
        private static OPCGroup OpcGpStorage;
      
        /********************哈希缓存表***************************/
        //哈希表,缓存储柜号与标签组中ID的匹配关系
        private static Hashtable HashCache_storage = Hashtable.Synchronized(new Hashtable());
       
        /// <summary>
        /// 页面加载
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PZYS_StorQualityMonitor2_Load(object sender, EventArgs e)
        {
            //初始化OPC
            InitializeOPCObject();
        }

        //********************OPC配置***************************
        /// <summary>
        /// OPC初始化
        /// </summary>
        /// <returns></returns>
        private void InitializeOPCObject()
        {
            try
            {
                //读取OPC配置信息
                string OPCServerName = System.Configuration.ConfigurationSettings.AppSettings["OPCServerName"].Trim();
                string NodeName = System.Configuration.ConfigurationSettings.AppSettings["NodeName"].Trim();

                //与OPC服务器建立连接
                OpcSvr.Connect(OPCServerName, NodeName);

                //建立OPC服务器标签组集合
                OpcGps = OpcSvr.OPCGroups;
                OpcGps.DefaultGroupUpdateRate = 1000;
                OpcGps.DefaultGroupIsActive = true;

                //初始化储柜标签组
                InitializeOpcGpStorageTag();               
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString(), "初始化错误，发生时刻："+System.DateTime.Now.ToString());
            }
        }

        /// <summary>
        /// 初始化储柜标签组
        /// </summary>
        private void InitializeOpcGpStorageTag()
        {
            //储柜标签组               
            OpcGpStorage = OpcGps.Add("Storage");
            //OpcGpStorage.OPCItems.DefaultAccessPath = "PLC2006";
            OpcGpStorage.UpdateRate = 1000;
            OpcGpStorage.IsActive = true;
            OpcGpStorage.IsSubscribed = true;

            //*************此DataChage事件必须定义在标签初始化之前才可以获取到标签的初始值********************//
            //标签组数值变化处理函数
            OpcGpStorage.DataChange += new DIOPCGroupEvent_DataChangeEventHandler(OpcGpStorage_DataChange);

            //获取储柜标签列表
            IList<Model.PZYS_Storage.StorageTag> StorTagList = BusinessLogicLayer.PZYS_Storage.StorageTag.GetAllStorageTagList();

            //位置号
            int Position = 1;
            foreach (Model.PZYS_Storage.StorageTag tag in StorTagList)
            {
                //储柜任务号
                if (tag.Tag_StorTaskID.Trim() != "")
                {
                    try
                    {
                        Struct_StorageFeild StorField = new Struct_StorageFeild();
                        StorField.StorID = tag.StorID;
                        StorField.FeildName = ENUM_StorageFeild.StorTaskID;
                        HashCache_storage.Add(Position, StorField);
                        OpcGpStorage.OPCItems.AddItem(tag.Tag_StorTaskID, Position);                      
                    }
                    catch(Exception ex)
                    {
                        Struct_ErrMessage emsg = new Struct_ErrMessage();
                        emsg.TimeStamp = System.DateTime.Now;
                        emsg.ErrText = "储柜[" + tag.StorName + "]“储柜任务号标签”错误。信息:"+ex.ToString();
                        ErrList.Add(emsg);
                    }                   
                    Position++;
                }
                else
                {
                    Struct_ErrMessage emsg = new Struct_ErrMessage();
                    emsg.TimeStamp = System.DateTime.Now;
                    emsg.ErrText = "储柜["+tag.StorName+"]没有配置“储柜任务号标签”";
                    ErrList.Add(emsg);
                }

                //储柜批次
                if (tag.Tag_Batch.Trim() != "")
                {
                    try
                    {
                        Struct_StorageFeild StorField = new Struct_StorageFeild();
                        StorField.StorID = tag.StorID;
                        StorField.FeildName = ENUM_StorageFeild.Batch;
                        HashCache_storage.Add(Position, StorField);
                        OpcGpStorage.OPCItems.AddItem(tag.Tag_Batch, Position);
                    }
                    catch (Exception ex)
                    {
                        Struct_ErrMessage emsg = new Struct_ErrMessage();
                        emsg.TimeStamp = System.DateTime.Now;
                        emsg.ErrText = "储柜[" + tag.StorName + "]“储柜批次标签”错误。信息:" + ex.ToString();
                        ErrList.Add(emsg);
                    }                   
                    Position++;
                }
                else
                {
                    Struct_ErrMessage emsg = new Struct_ErrMessage();
                    emsg.TimeStamp = System.DateTime.Now;
                    emsg.ErrText = "储柜[" + tag.StorName + "]没有配置“储柜批次标签”";
                    ErrList.Add(emsg);
                }

                //储柜牌号ID
                if (tag.Tag_BrandID.Trim() != "")
                {
                    try
                    {
                        Struct_StorageFeild StorField = new Struct_StorageFeild();
                        StorField.StorID = tag.StorID;
                        StorField.FeildName = ENUM_StorageFeild.BrandID;
                        HashCache_storage.Add(Position, StorField);
                        OpcGpStorage.OPCItems.AddItem(tag.Tag_BrandID, Position);
                    }
                    catch (Exception ex)
                    {
                        Struct_ErrMessage emsg = new Struct_ErrMessage();
                        emsg.TimeStamp = System.DateTime.Now;
                        emsg.ErrText = "储柜[" + tag.StorName + "]“储柜牌号ID标签”错误。信息:" + ex.ToString();
                        ErrList.Add(emsg);
                    }                   
                    Position++;
                }
                else
                {
                    Struct_ErrMessage emsg = new Struct_ErrMessage();
                    emsg.TimeStamp = System.DateTime.Now;
                    emsg.ErrText = "储柜[" + tag.StorName + "]没有配置“储柜牌号ID标签”";
                    ErrList.Add(emsg);
                }

                //储柜运行状态
                if (tag.Tag_RunState.Trim() != "")
                {
                    try
                    {
                        Struct_StorageFeild StorField = new Struct_StorageFeild();
                        StorField.StorID = tag.StorID;
                        StorField.FeildName = ENUM_StorageFeild.RunState;
                        HashCache_storage.Add(Position, StorField);
                        OpcGpStorage.OPCItems.AddItem(tag.Tag_RunState, Position);
                    }
                    catch (Exception ex)
                    {
                        Struct_ErrMessage emsg = new Struct_ErrMessage();
                        emsg.TimeStamp = System.DateTime.Now;
                        emsg.ErrText = "储柜[" + tag.StorName + "]“储柜运行状态标签”错误。信息:" + ex.ToString();
                        ErrList.Add(emsg);
                    }                  
                    Position++;
                }
                else
                {
                    Struct_ErrMessage emsg = new Struct_ErrMessage();
                    emsg.TimeStamp = System.DateTime.Now;
                    emsg.ErrText = "储柜[" + tag.StorName + "]没有配置“储柜运行状态标签”";
                    ErrList.Add(emsg);
                }

                //储柜重量
                if (tag.Tag_Weight.Trim() != "")
                {
                    try
                    {                       
                        Struct_StorageFeild StorField = new Struct_StorageFeild();
                        StorField.StorID = tag.StorID;
                        StorField.FeildName = ENUM_StorageFeild.Weight;
                        HashCache_storage.Add(Position, StorField);
                        OpcGpStorage.OPCItems.AddItem(tag.Tag_Weight, Position);
                    }
                    catch (Exception ex)
                    {
                        Struct_ErrMessage emsg = new Struct_ErrMessage();
                        emsg.TimeStamp = System.DateTime.Now;
                        emsg.ErrText = "储柜[" + tag.StorName + "]“储柜重量标签”错误。信息:" + ex.ToString();
                        ErrList.Add(emsg);
                    }                   
                    Position++;
                }
                else
                {
                    Struct_ErrMessage emsg = new Struct_ErrMessage();
                    emsg.TimeStamp = System.DateTime.Now;
                    emsg.ErrText = "储柜[" + tag.StorName + "]没有配置“储柜重量标签”";
                    ErrList.Add(emsg);
                }

                //储柜底带剩余
                if (tag.Tag_RemailPercent.Trim() != "")
                {
                    try
                    {                       
                        Struct_StorageFeild StorField = new Struct_StorageFeild();
                        StorField.StorID = tag.StorID;
                        StorField.FeildName = ENUM_StorageFeild.RemainPercent;
                        HashCache_storage.Add(Position, StorField);
                        OpcGpStorage.OPCItems.AddItem(tag.Tag_RemailPercent, Position);
                    }
                    catch (Exception ex)
                    {
                        Struct_ErrMessage emsg = new Struct_ErrMessage();
                        emsg.TimeStamp = System.DateTime.Now;
                        emsg.ErrText = "储柜[" + tag.StorName + "]“储柜底带剩余标签”错误。信息:" + ex.ToString();
                        ErrList.Add(emsg);
                    }                  
                    Position++;
                }
                else
                {
                    Struct_ErrMessage emsg = new Struct_ErrMessage();
                    emsg.TimeStamp = System.DateTime.Now;
                    emsg.ErrText = "储柜[" + tag.StorName + "]没有配置“储柜底带剩余标签”";
                    ErrList.Add(emsg);
                }

                //储柜统计标记
                if (tag.Tag_StatMarkStr.Trim() != "")
                {
                    try
                    {                      
                        Struct_StorageFeild StorField = new Struct_StorageFeild();
                        StorField.StorID = tag.StorID;
                        StorField.FeildName = ENUM_StorageFeild.StatMarkStr;
                        HashCache_storage.Add(Position, StorField);
                        OpcGpStorage.OPCItems.AddItem(tag.Tag_StatMarkStr, Position);
                    }
                    catch (Exception ex)
                    {
                        Struct_ErrMessage emsg = new Struct_ErrMessage();
                        emsg.TimeStamp = System.DateTime.Now;
                        emsg.ErrText = "储柜[" + tag.StorName + "]“储柜统计标记标签”错误。信息:" + ex.ToString();
                        ErrList.Add(emsg);
                    }                   
                    Position++;
                }
                else
                {
                    Struct_ErrMessage emsg = new Struct_ErrMessage();
                    emsg.TimeStamp = System.DateTime.Now;
                    emsg.ErrText = "储柜[" + tag.StorName + "]没有配置“储柜底带剩余标签”";
                    ErrList.Add(emsg);
                }
            }
            //foreach循环结束
        }

        /// <summary>
        /// 储柜标签组数据变化处理
        /// </summary>
        /// <param name="TransactionID"></param>
        /// <param name="NumItems"></param>
        /// <param name="ClientHandles"></param>
        /// <param name="ItemValues"></param>
        /// <param name="Qualities"></param>
        /// <param name="TimeStamps"></param>
        void OpcGpStorage_DataChange(int TransactionID, int NumItems, ref Array ClientHandles, ref Array ItemValues, ref Array Qualities, ref Array TimeStamps)
        {
            try
            {
                //变化标签的位置
                int Position = 0;
                //变化的数值
                string ChangeValue = "";
                //储柜编号
                string StorID = "";
                //数据质量
                string Quality = "";
                //此项对应的数据库字段位置
                ENUM_StorageFeild Field = ENUM_StorageFeild.StatMarkStr;

                for (int i = 1; i <= ClientHandles.Length; i++)
                {
                    //变化标签的位置号
                    Position = (int)ClientHandles.GetValue(i);
                    //变化值
                    ChangeValue = ItemValues.GetValue(i).ToString();

                    Struct_StorageFeild StorField = (Struct_StorageFeild)HashCache_storage[Position];
                    //变化位置好对应的储柜ID
                    StorID = StorField.StorID;
                    //对应的字段位置
                    Field = StorField.FeildName;

                    //质量
                    Quality = Qualities.GetValue(i).ToString();
                    if (Quality != "192")
                    {
                        Struct_ErrMessage emsg = new Struct_ErrMessage();
                        emsg.TimeStamp = System.DateTime.Now;
                        emsg.ErrText = "字段【"+Field.ToString()+"】获取到Bad数据，柜号：" + StorID + "；bad值：" + ChangeValue + "；";
                        ErrList.Add(emsg);
                        continue;
                    }

                    //数据库更新影响行数
                    int rlt = 0;
                    if (Field == ENUM_StorageFeild.Batch)//更新 批次
                    {
                        rlt= BusinessLogicLayer.PZYS_Storage.StorageData.UpdateStorageBatch(StorID,ChangeValue);
                        if (rlt != 1)
                        {
                            Struct_ErrMessage emsg = new Struct_ErrMessage();
                            emsg.TimeStamp = System.DateTime.Now;
                            emsg.ErrText = "【批次】值数据更新错误，柜号：" + StorID + "；更新值：" + ChangeValue + "；数据库返回影响行数："+rlt.ToString()+"；";
                            ErrList.Add(emsg);
                        }
                    }
                    else if (Field == ENUM_StorageFeild.BrandID)//更新 牌号ID
                    {
                        rlt = BusinessLogicLayer.PZYS_Storage.StorageData.UpdateStorageBrandID(StorID, ChangeValue);
                        if (rlt != 1)
                        {
                            Struct_ErrMessage emsg = new Struct_ErrMessage();
                            emsg.TimeStamp = System.DateTime.Now;
                            emsg.ErrText = "【牌号ID】值数据更新错误，柜号：" + StorID + "；更新值：" + ChangeValue + "；数据库返回影响行数：" + rlt.ToString() + "；";
                            ErrList.Add(emsg);
                        }
                    }
                    else if (Field == ENUM_StorageFeild.RemainPercent)//更新 底带剩余
                    {
                        rlt = BusinessLogicLayer.PZYS_Storage.StorageData.UpdateStorageRemainPercent(StorID, ChangeValue);
                        if (rlt != 1)
                        {
                            Struct_ErrMessage emsg = new Struct_ErrMessage();
                            emsg.TimeStamp = System.DateTime.Now;
                            emsg.ErrText = "【底带剩余】值数据更新错误，柜号：" + StorID + "；更新值：" + ChangeValue + "；数据库返回影响行数：" + rlt.ToString() + "；";
                            ErrList.Add(emsg);
                        }
                    }
                    else if (Field == ENUM_StorageFeild.RunState)//更新 运行状态
                    {
                        rlt = BusinessLogicLayer.PZYS_Storage.StorageData.UpdateStorageRunState(StorID, ChangeValue);
                        if (rlt != 1)
                        {
                            Struct_ErrMessage emsg = new Struct_ErrMessage();
                            emsg.TimeStamp = System.DateTime.Now;
                            emsg.ErrText = "【运行状态】值数据更新错误，柜号：" + StorID + "；更新值：" + ChangeValue + "；数据库返回影响行数：" + rlt.ToString() + "；";
                            ErrList.Add(emsg);
                        }
                    }
                    else if (Field == ENUM_StorageFeild.StatMarkStr)//更新 统计标记
                    {
                        rlt = BusinessLogicLayer.PZYS_Storage.StorageData.UpdateStorageStatMarkStr(StorID, ChangeValue);
                        if (rlt != 1)
                        {
                            Struct_ErrMessage emsg = new Struct_ErrMessage();
                            emsg.TimeStamp = System.DateTime.Now;
                            emsg.ErrText = "【统计标识】值数据更新错误，柜号：" + StorID + "；更新值：" + ChangeValue + "；数据库返回影响行数：" + rlt.ToString() + "；";
                            ErrList.Add(emsg);
                        }
                    }
                    else if (Field == ENUM_StorageFeild.StorTaskID)//更新 进柜任务ID
                    {
                        rlt = BusinessLogicLayer.PZYS_Storage.StorageData.UpdateStorageTaskID(StorID, ChangeValue);
                        if (rlt != 1)
                        {
                            Struct_ErrMessage emsg = new Struct_ErrMessage();
                            emsg.TimeStamp = System.DateTime.Now;
                            emsg.ErrText = "【进柜任务ID】值数据更新错误，柜号：" + StorID + "；更新值：" + ChangeValue + "；数据库返回影响行数：" + rlt.ToString() + "；";
                            ErrList.Add(emsg);
                        }
                    }
                    else if (Field == ENUM_StorageFeild.Weight)//更新 存量
                    {
                        rlt = BusinessLogicLayer.PZYS_Storage.StorageData.UpdateStorageWeight(StorID, ChangeValue);
                        if (rlt != 1)
                        {
                            Struct_ErrMessage emsg = new Struct_ErrMessage();
                            emsg.TimeStamp = System.DateTime.Now;
                            emsg.ErrText = "【存储量】值数据更新错误，柜号：" + StorID + "；更新值：" + ChangeValue + "；数据库返回影响行数：" + rlt.ToString() + "；";
                            ErrList.Add(emsg);
                        }
                    }
                }
              
            }
            catch (Exception ex)
            {
                Struct_ErrMessage emsg = new Struct_ErrMessage();
                emsg.TimeStamp = System.DateTime.Now;
                emsg.ErrText = "标签变化值更新错误！" + ex.ToString();
                ErrList.Add(emsg);
            }
            //最后刷新时间
            label3.Text = "OPC最后反馈时间：" + System.DateTime.Now.ToString();
        }

        //******************基础结构*********************
        /// <summary>
        /// 异常错误信息结构
        /// </summary>
        private struct Struct_ErrMessage
        {
            /// <summary>
            /// 发生时刻
            /// </summary>
            public DateTime TimeStamp;
            /// <summary>
            /// 错误信息
            /// </summary>
            public string ErrText;
        }      

        /// <summary>
        /// 储柜字段结构
        /// </summary>
        private struct Struct_StorageFeild
        {
            /// <summary>
            /// 发生时刻
            /// </summary>
            public string StorID;
            /// <summary>
            /// 错误信息
            /// </summary>
            public ENUM_StorageFeild FeildName;
        }

        /// <summary>
        /// 储柜表字段使用标签更新列的枚举
        /// </summary>
        private enum ENUM_StorageFeild
        {
            /// <summary>
            /// 储柜任务号
            /// </summary>
            StorTaskID = 0,
            /// <summary>
            /// 批次
            /// </summary>
            Batch = 1,
            /// <summary>
            /// 牌号ID
            /// </summary>
            BrandID = 2,
            /// <summary>
            /// 储柜重量
            /// </summary>
            Weight = 3,
            /// <summary>
            /// 底带剩余量
            /// </summary>
            RemainPercent = 4,
            /// <summary>
            /// 储柜运行状态
            /// </summary>
            RunState = 5,
            /// <summary>
            /// 统计标识字符串，任务号+X或Y，Y表示统计
            /// </summary>
            StatMarkStr = 6
        }

       //****************************************************
    }