//################ Sub procedure to initialize OPC Server ######
private void StopOPCClient()
{
// ==
// Description : 断开连接OPCServer，返回值False为断开失败，True为断开成功
// Created : 2009/01/19
// Author : zgh
// Update :
// Updater :
// ==
//bool value = false;
try
{
ObjOPCGroup.IsActive = false;
//ObjOPCGroup.Remove(ObjOPCGroup.ServerHandle)
ObjOPCGroups.RemoveAll();
ObjOPCItems = null;
ObjOPCGroups = null;
ObjOPCGroup = null;
//ObjOPCGroup.AsyncReadComplete += ObjOPCGroup_AsyncReadComplete;
ObjOPCServer.Disconnect();
ObjOPCServer = null;
//colTagName = Nothing
//value = true;
//MessageLog("clsDeviceOPC.StopOPCClient(): Disconnected from OPC device \'" + DeviceName + "\'");
LOG.Info("断开OPC连接 \'" + SourceName + "\'");
}
catch (Exception ex)
{
//value = false;
//WarnLog(ex.StackTrace + "\r\n" + ex.Message);
// MsgBox(ex.Message)
LOG.Error(string.Format("OPCDataSource断开连接出错行：{0},", ex.Message));
}
finally
{
System.GC.Collect(); //强制垃圾回收
}
}
//################ Sub procedure to initialize OPC Server ######
private bool StartOPCClient()
{
int liCounter = 0;
Array gpServerHandlers = null;
Array gsErrors = null;
string GroupName = SourceName;
try
{
ObjOPCServer = new OPCServer();
//##### Initialize OPC Server ################################
ObjOPCServer.Connect(OPCServerName, "");
ObjOPCGroups = ObjOPCServer.OPCGroups;
ObjOPCGroup = ObjOPCGroups.Add(GroupName);
ObjOPCGroup.AsyncReadComplete += ObjOPCGroup_AsyncReadComplete;
//Add OPCGroup
ObjOPCGroup.UpdateRate = UpdateInterval;
ObjOPCGroup.IsActive = false;
ObjOPCGroup.IsSubscribed = ObjOPCGroup.IsActive;
ObjOPCItems = ObjOPCGroup.OPCItems;
//Create opc items
Array_Address = Array.CreateInstance(typeof(string), NoOfItems + 1);
Array_ClientHanlers = Array.CreateInstance(typeof(int), NoOfItems + 1);
Array_ServerHandlers = Array.CreateInstance(typeof(int), NoOfItems + 1);
//Build OPCItems Array
for (liCounter = 1; liCounter <= NoOfItems; liCounter++)
{
Array_Address.SetValue(List_Address[liCounter - 1], liCounter);
Array_ClientHanlers.SetValue(liCounter, liCounter);
}
ObjOPCItems.AddItems(NoOfItems, ref Array_Address, ref Array_ClientHanlers, out
gpServerHandlers, out gsErrors);
//Get the server handlers
bool HasError = false;
for (liCounter = 1; liCounter <= NoOfItems; liCounter++)
{
if ((int)gsErrors.GetValue(liCounter) == 0)
{
Array_ServerHandlers.SetValue((int)gpServerHandlers.GetValue(liCounter), liCounter);
}
else
{
LOG.Error("Tag \'" + List_Address[liCounter - 1] + "\' has problem连接失败错误");
HasError = true;
}
}
if (!HasError)
{
LOG.Info(" 启动OPC组 \'" + SourceName + "\'");
}
return(!HasError);
}
catch (Exception ex)
{
LOG.Error(string.Format("连接OPC出错：读取资源{0}{1}", GroupName, ex.Message));
return(false);
}
}