OPCDAAuto.dll的C#使用方法浅析
上次研究了.Net版本的OPC API dll，这次我采用OPCDAAuto.dll来介绍使用方法。
以下为我的源代码，有详细的注释无需我多言。
编译平台：VS2008SP1、WINXP、KEPServer
除此之外，我也安装了西门子的Net2006和Step7，其中Net2006是负责OPC的，可能会在系统中创建一些dll之类的，并提供几个OPC服务器
以下是我Program.cs（基于控制台的）的全部内容，仍旧采用C#语言：
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.Collections; using OPCAutomation; using System.Threading; namespace OPCDAAutoTest { class Tester { static void Main(string[] args) { Tester tester=new Tester(); tester.work(); } #region 私有变量 /// <summary> /// OPCServer Object /// </summary> OPCServer MyServer; /// <summary> /// OPCGroups Object /// </summary> OPCGroups MyGroups; /// <summary> /// OPCGroup Object /// </summary> OPCGroup MyGroup; OPCGroup MyGroup2; /// <summary> /// OPCItems Object /// </summary> OPCItems MyItems; OPCItems MyItems2; /// <summary> /// OPCItem Object /// </summary> OPCItem[] MyItem; OPCItem[] MyItem2; /// <summary> /// 主机IP /// </summary> string strHostIP = ""; /// <summary> /// 主机名称 /// </summary> string strHostName = ""; /// <summary> /// 连接状态 /// </summary> bool opc_connected = false; /// <summary> /// 客户端句柄 /// </summary> int itmHandleClient = 0; /// <summary> /// 服务端句柄 /// </summary> int itmHandleServer = 0; #endregion //测试用工作方法 public void work() { //初始化item数组 MyItem = new OPCItem[4]; MyItem2 = new OPCItem[4]; GetLocalServer(); //ConnectRemoteServer("TX1", "KEPware.KEPServerEx.V4");//用计算机名的局域网 //ConnectRemoteServer("192.168.1.35", "KEPware.KEPServerEx.V4");//用IP的局域网 if (ConnectRemoteServer("", "KEPware.KEPServerEx.V4"))//本机 { if (CreateGroup()) { Thread.Sleep(500);//暂停线程以让DataChange反映，否则下面的同步读可能读不到 //以下同步写 MyItem[3].Write("I love you!");//同步写 MyItem[2].Write(true);//同步写 MyItem[1].Write(-100);//同步写 MyItem[0].Write(120);//同步写 //以下同步读 object ItemValues; object Qualities; object TimeStamps;//同步读的临时变量：值、质量、时间戳 MyItem[0].Read(1,out ItemValues,out Qualities,out TimeStamps);//同步读，第一个参数只能为1或2 int q0 = Convert.ToInt32(ItemValues);//转换后获取item值 MyItem[1].Read(1, out ItemValues, out Qualities, out TimeStamps);//同步读，第一个参数只能为1或2 int q1 = Convert.ToInt32(ItemValues);//转换后获取item值 MyItem[2].Read(1, out ItemValues, out Qualities, out TimeStamps);//同步读，第一个参数只能为1或2 bool q2 = Convert.ToBoolean(ItemValues);//转换后获取item值 MyItem[3].Read(1, out ItemValues, out Qualities, out TimeStamps);//同步读，第一个参数只能为1或2 string q3 = Convert.ToString(ItemValues);//转换后获取item值，为防止读到的值为空，不用ItemValues.ToString() Console.WriteLine("~~~~~~~~~~~~~~~~~~~~~~~~~~~~"); Console.WriteLine("0-{0},1-{1},2-{2},3-{3}",q0,q1,q2,q3); //以下为异步写 //异步写时，Array数组从下标1开始而非0！ int[] temp = new int[] { 0,MyItem[0].ServerHandle,MyItem[1].ServerHandle,MyItem[2].ServerHandle, MyItem[3].ServerHandle }; Array serverHandles = (Array)temp; object[] valueTemp = new object[5] { "",255,520,true, "Love" }; Array values = (Array)valueTemp; Array Errors; int cancelID; MyGroup.AsyncWrite(4, ref serverHandles, ref values, out Errors, 1, out cancelID);//第一参数为item数量 //由于MyGroup2没有订阅，所以以下这句运行时将会出错！ //MyGroup2.AsyncWrite(4, ref serverHandles, ref values, out Errors, 1, out cancelID); //以下异步读 MyGroup.AsyncRead(4, ref serverHandles, out Errors, 1, out cancelID);//第一参数为item数量 /*MyItem[0] = MyItems.AddItem("BPJ.Db1.dbb96", 0);//byte MyItem[1] = MyItems.AddItem("BPJ.Db1.dbw10", 1);//short MyItem[2] = MyItems.AddItem("BPJ.Db16.dbx0", 2);//bool MyItem[3] = MyItems.AddItem("BPJ.Db11.S0", 3);//string*/ Console.WriteLine("************************************** hit <return> to Disconnect..."); Console.ReadLine(); //释放所有组资源 MyServer.OPCGroups.RemoveAll(); //断开服务器 MyServer.Disconnect(); } } //END Console.WriteLine("************************************** hit <return> to close..."); Console.ReadLine(); } //枚举本地OPC服务器 private void GetLocalServer() { //获取本地计算机IP,计算机名称 strHostName = Dns.GetHostName(); //或者通过局域网内计算机名称 strHostName = "TX1"; //获取本地计算机上的OPCServerName try { MyServer = new OPCServer(); object serverList = MyServer.GetOPCServers(strHostName); foreach (string server in (Array)serverList) { //cmbServerName.Items.Add(turn); Console.WriteLine("本地OPC服务器：{0}", server); } } catch (Exception err) { Console.WriteLine("枚举本地OPC服务器出错：{0}",err.Message); } } //连接OPC服务器 /// <param name="remoteServerIP">OPCServerIP</param> /// <param name="remoteServerName">OPCServer名称</param> private bool ConnectRemoteServer(string remoteServerIP, string remoteServerName) { try { MyServer.Connect(remoteServerName, remoteServerIP);//连接本地服务器：服务器名+主机名或IP if (MyServer.ServerState == (int)OPCServerState.OPCRunning) { Console.WriteLine("已连接到：{0}",MyServer.ServerName); } else { //这里你可以根据返回的状态来自定义显示信息，请查看自动化接口API文档 Console.WriteLine("状态：{0}",MyServer.ServerState.ToString()); } MyServer.ServerShutDown+=ServerShutDown;//服务器断开事件 } catch (Exception err) { Console.WriteLine("连接远程服务器出现错误：{0}" + err.Message); return false; } return true; } //创建组 private bool CreateGroup() { try { MyGroups = MyServer.OPCGroups; MyGroup = MyServer.OPCGroups.Add("测试");//添加组 MyGroup2 = MyGroups.Add("测试2"); OPCGroup MyGroup3 = MyGroups.Add("测试3");//测试删除组 //以下设置组属性 { MyServer.OPCGroups.DefaultGroupIsActive = true;//激活组。 MyServer.OPCGroups.DefaultGroupDeadband = 0;// 死区值，设为0时，服务器端该组内任何数据变化都通知组。 MyServer.OPCGroups.DefaultGroupUpdateRate = 200;//默认组群的刷新频率为200ms MyGroup.UpdateRate = 100;//刷新频率为1秒。 MyGroup.IsSubscribed = true;//使用订阅功能，即可以异步，默认false } MyGroup.DataChange += new DIOPCGroupEvent_DataChangeEventHandler(GroupDataChange); MyGroup.AsyncWriteComplete += new DIOPCGroupEvent_AsyncWriteCompleteEventHandler(GroupAsyncWriteComplete); MyGroup.AsyncReadComplete += new DIOPCGroupEvent_AsyncReadCompleteEventHandler(GroupAsyncReadComplete); //由于MyGroup2.IsSubscribed是false，即没有订阅，所以以下的DataChange回调事件不会发生！ MyGroup2.DataChange += new DIOPCGroupEvent_DataChangeEventHandler(GroupDataChange2); MyGroup.AsyncWriteComplete += new DIOPCGroupEvent_AsyncWriteCompleteEventHandler(GroupAsyncWriteComplete); MyServer.OPCGroups.Remove("测试3");//移除组 AddGroupItems();//设置组内items } catch (Exception err) { Console.WriteLine("创建组出现错误：{0}", err.Message); return false; } return true; } private void AddGroupItems()//添加组 { //itmHandleServer; MyItems = MyGroup.OPCItems; MyItems2 = MyGroup2.OPCItems; //添加item MyItem[0] = MyItems.AddItem("BPJ.Db1.dbb96", 0);//byte MyItem[1] = MyItems.AddItem("BPJ.Db1.dbw10", 1);//short MyItem[2] = MyItems.AddItem("BPJ.Db16.dbx0", 2);//bool MyItem[3] = MyItems.AddItem("BPJ.Db11.S0", 3);//string //移除组内item Array Errors; int []temp=new int[]{0,MyItem[3].ServerHandle}; Array serverHandle = (Array)temp; MyItems.Remove(1, ref serverHandle, out Errors); MyItem[3] = MyItems.AddItem("BPJ.Db11.S0", 3);//string MyItem2[0] = MyItems2.AddItem("BPJ.Db1.dbb96", 0);//byte MyItem2[1] = MyItems2.AddItem("BPJ.Db1.dbw10", 1);//short MyItem2[2] = MyItems2.AddItem("BPJ.Db16.dbx0", 2);//bool MyItem2[3] = MyItems2.AddItem("BPJ.Db11.S0", 3);//string } public void ServerShutDown(string Reason)//服务器先行断开 { Console.WriteLine("服务器已经先行断开！"); } /// <summary> /// 每当项数据有变化时执行的事件 /// </summary> /// <param name="TransactionID">处理ID</param> /// <param name="NumItems">项个数</param> /// <param name="ClientHandles">项客户端句柄</param> /// <param name="ItemValues">TAG值</param> /// <param name="Qualities">品质</param> /// <param name="TimeStamps">时间戳</param>1 ` void GroupDataChange(int TransactionID, int NumItems, ref Array ClientHandles, ref Array ItemValues, ref Array Qualities, ref Array TimeStamps) { Console.WriteLine("++++++++++++++++DataChanged+++++++++++++++++++++++"); /*for (int i = 1; i <= NumItems; i++) { Console.WriteLine("item值：{0}", ItemValues.GetValue(i).ToString()); //Console.WriteLine("item句柄：{0}", ClientHandles.GetValue(i).ToString()); //Console.WriteLine("item质量：{0}", Qualities.GetValue(i).ToString()); //Console.WriteLine("item时间戳：{0}", TimeStamps.GetValue(i).ToString()); //Console.WriteLine("item类型：{0}", ItemValues.GetValue(i).GetType().FullName); }*/ } void GroupDataChange2(int TransactionID, int NumItems, ref Array ClientHandles, ref Array ItemValues, ref Array Qualities, ref Array TimeStamps) { Console.WriteLine("----------------------DataChanged2------------------"); /*for (int i = 1; i <= NumItems; i++) { Console.WriteLine("item2值：{0}", ItemValues.GetValue(i).ToString()); //Console.WriteLine("item2质量：{0}", Qualities.GetValue(i).ToString()); //Console.WriteLine("item2时间戳：{0}", TimeStamps.GetValue(i).ToString()); }*/ } /// <summary> /// 异步写完成 /// 运行时，Array数组从下标1开始而非0！ /// </summary> /// <param name="TransactionID"></param> /// <param name="NumItems"></param> /// <param name="ClientHandles"></param> /// <param name="Errors"></param> void GroupAsyncWriteComplete(int TransactionID, int NumItems, ref Array ClientHandles, ref Array Errors) { Console.WriteLine("%%%%%%%%%%%%%%%%AsyncWriteComplete%%%%%%%%%%%%%%%%%%%"); /*for (int i = 1; i <= NumItems; i++) { Console.WriteLine("Tran：{0} ClientHandles：{1} Error：{2}", TransactionID.ToString(), ClientHandles.GetValue(i).ToString(), Errors.GetValue(i).ToString()); }*/ } /// <summary> /// 异步读完成 /// 运行时，Array数组从下标1开始而非0！ /// </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> /// <param name="Errors"></param> void GroupAsyncReadComplete(int TransactionID, int NumItems, ref System.Array ClientHandles, ref System.Array ItemValues, ref System.Array Qualities, ref System.Array TimeStamps, ref System.Array Errors) { Console.WriteLine("****************GroupAsyncReadComplete*******************"); for (int i = 1; i <= NumItems; i++) { //Console.WriteLine("Tran：{0} ClientHandles：{1} Error：{2}", TransactionID.ToString(), ClientHandles.GetValue(i).ToString(), Errors.GetValue(i).ToString()); Console.WriteLine("Vaule：{0}",Convert.ToString(ItemValues.GetValue(i))); } } } }
