一，安装KEPware.Enhanced.OPC.DDE.KEPServer。(PLC数据传送给KEPServer,开发的程序用OPCServer读KEPServer)

设置ip地址后面是指的plc站号，此处必须和plc上站号对应。否则无法接收数据。

打开quick client 查看传值情况

二.C#程序代码

引用opcdaauto.dll

在win7 64位下KepServer = new OPCServer()会出错的问题，

检索COM 类工厂中 CLSID 为 28e68f9a-8d75-11d1-8dc3-3c302a000000 的组件时失败，原因是出现以下错误： 80040154

1.一定要到C:\\Windows\\SysWOW64路径下打开cmd.exe运行命令文件（而不是在运行打开),注册 OPCDAAuto.dll 输入命令: REGSVR32 OPCDAAuto.dll;即可

2.编译工具目标要选择x86

KepServer.Connect(\"KEPware.KEPServerEx.V4\", \"127.0.0.1\"); 此处ip地址是安装KEPware.Enhanced.OPC.DDE.KEPServer电脑的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;
 //轴承净重，注脂量，防尘盖压入深度，防尘盖平整度 压入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连接成功\";
 }
 else
 {
 // statusLabelConnectInfo.Text = \"OPC Server连接失败\";
 return;
 }
 }
 catch (Exception ex)
 // statusLabelConnectInfo.Text = \"OPC Server连接失败,\" + ex.Message;
 return;
 KepGroups = KepServer.OPCGroups;
 Thread t1; // 开1个线程用于读取数据
 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 = ;
 KepGroup.IsActive = true;
 KepGroup.IsSubscribed = true;
 //当KepGroup中数据发生改变的触发事件
 KepGroup.DataChange += new DIOPCGroupEvent_DataChangeEventHandler(KepGroup_DataChange);
 KepItems = KepGroup.OPCItems;
 item1 = KepItems.AddItem(\"Channel1.Device1.A01\", );
 item2 = KepItems.AddItem(\"Channel1.Device1.A02\", );
 item3 = KepItems.AddItem(\"Channel1.Device1.A03\", ); //当数据改变时触发的事件
 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 = ; i = NumItems; i++)
 {
 if (ClientHandles.GetValue(i).Equals())
 {
 str = \"A01:\" + ItemValues.GetValue(i).ToString();
 if (ClientHandles.GetValue(i).Equals())
 {
 str = \"A02:\" + ItemValues.GetValue(i).ToString();
 if (ClientHandles.GetValue(i).Equals())
 {
 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();
 }
}