一，安裝KEPware.Enhanced.OPC.DDE.KEPServer。(PLC數據傳送給KEPServer,開發的程序用OPCServer讀KEPServer)

設置ip地址后面是指的plc站號，此處必須和plc上站號對應。否則無法接收數據。

打開quick client 查看傳值情況

二.C#程序代碼

引用opcdaauto.dll

在win7 64位下KepServer = new OPCServer()會出錯的問題，

檢索COM 類工廠中 CLSID 為 <28e68f9a-8d75-11d1-8dc3-3c302a000000> 的組件時失敗，原因是出現以下錯誤： 80040154

1.一定要到C:WindowsSysWOW64路徑下打開cmd.exe運行命令文件（而不是在運行打開),注冊“OPCDAAuto.dll” 輸入命令: REGSVR32 OPCDAAuto.dll;即可

2.編譯工具目標要選擇x86

KepServer.Connect("KEPware.KEPServerEx.V4", "127.0.0.1"); 此處ip地址是安裝KEPware.Enhanced.OPC.DDE.KEPServer電腦的ip地址.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using OPCAutomation;
using System.Threading;


namespace SPCTest
{
    public partial class Form2 : Form
    {


        private OPCServer KepServer;
        private OPCGroups KepGroups;
        private OPCGroup KepGroup;

        private OPCItems KepItems;
        //軸承凈重，注脂量，防塵蓋壓入深度，防塵蓋平整度   壓入OK/NG
        private OPCItem item1, item2, item3;

        public Form2()
        {
            InitializeComponent();
        }


        #region OPC Server
        private void KepServerLoad()
        {
            try
            {
                KepServer = new OPCServer();
                KepServer.Connect("KEPware.KEPServerEx.V4", "127.0.0.1");
                if (KepServer.ServerState == (int)OPCServerState.OPCRunning)
                {
                   // statusLabelConnectInfo.Text = "OPC Server連接成功";
                }
                else
                {
                   // statusLabelConnectInfo.Text = "OPC Server連接失敗";
                    return;
                }
            }
            catch (Exception ex)
            {

               // statusLabelConnectInfo.Text = "OPC Server連接失敗," + ex.Message;
                return;
            }

            KepGroups = KepServer.OPCGroups;
            Thread t1; // 開1個線程用于讀取數據                 
            t1 = new Thread(new ThreadStart(KepProcess));
            t1.Start();

        }

        public void KepProcess()
        {
            //KepGroup = KepGroups.Add("Channel.Device.Group");
            KepGroup = KepGroups.Add("Channel1.Device1.Group");
            KepGroup.UpdateRate = 250;
            KepGroup.IsActive = true;
            KepGroup.IsSubscribed = true;
            //當KepGroup中數據發生改變的觸發事件    
            KepGroup.DataChange += new DIOPCGroupEvent_DataChangeEventHandler(KepGroup_DataChange);
            KepItems = KepGroup.OPCItems;
            item1 = KepItems.AddItem("Channel1.Device1.A01", 1);
            item2 = KepItems.AddItem("Channel1.Device1.A02", 2);
            item3 = KepItems.AddItem("Channel1.Device1.A03", 3);


        }
      
        //當數據改變時觸發的事件 
        public delegate void DelegateShowMessage(string str);
        
        public void KepGroup_DataChange(int TransactionID, int NumItems, ref Array ClientHandles, ref Array ItemValues, ref Array Qualities, ref Array TimeStamps)
        {
            string str = "";
            DelegateShowMessage show1 = new DelegateShowMessage(ShowMessage);
            for (int i = 1; i <= NumItems; i++)
            {
                if (ClientHandles.GetValue(i).Equals(1))
                {
                    str = "A01:" + ItemValues.GetValue(i).ToString();
                }

                if (ClientHandles.GetValue(i).Equals(2))
                {
                    str = "A02:" + ItemValues.GetValue(i).ToString();
                }

                if (ClientHandles.GetValue(i).Equals(3))
                {
                    str = "A03:" + ItemValues.GetValue(i).ToString();

                }
             
                BeginInvoke(show1, new string[] { str });
            }

         
          

        }

    
     
        public void ShowMessage(string str)
        {
            
            richTextBox1.AppendText(str+",");
          
        }

    
        #endregion

        private void Form2_Load(object sender, EventArgs e)
        {
            KepServerLoad();
        }

        private void Form2_FormClosing(object sender, FormClosingEventArgs e)
        {
            KepServer.Disconnect();
        }

    }
}

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