//附加组到服务器执行的操作
internal void AttachToServer(SHHOPCServer server)
{
try
{
this.Server = server;
OPCServerState serverState = (OPCServerState)(server.OPCServer.ServerState);
if (serverState != OPCServerState.OPCDisconnected)
{
//OPC服务对象
_opcGroup = server.OPCServer.OPCGroups.Add(this.Name);
_opcGroup.TimeBias = TimeBias;
_opcGroup.UpdateRate = UpdateRate;
_opcGroup.IsActive = IsActive;
_opcGroup.IsSubscribed = IsSubscribed;
_opcGroup.DeadBand = DeadBend;
_opcGroup.DataChange += OPCGroup_DataChange; //测点值改变(一般是事件订阅触发)
_opcGroup.AsyncReadComplete += OPCGroup_AsyncReadComplete; //异步读成功
_opcGroup.AsyncWriteComplete += OPCGroup_AsyncWriteComplete; //异步写成功
_opcGroup.AsyncCancelComplete += OPCGroup_AsyncCancelComplete; //异步取消成功
//重新注册子项
for (int i = 0; i < ItemList.Count; i++)
{
ItemList[i].DetachFromGroup(this);
ItemList[i].AttachToGroup(this);
}
}
//Server = null;
}
catch
{ }
}
//链接OPC服务器
public void Connnect()
{
try
{
OPCServerState state = (OPCServerState)(_OPCServer.ServerState);
if (state != OPCServerState.OPCRunning)
{
_OPCServer.Connect(_OPCServerName, _IPAddress.ToString());
for (int i = 0; i < Groups.Count; i++)
{
Groups[i].DetachFromServer(this);//重新注册一下各个组
Groups[i].AttachToServer(this);
}
}
}
catch
{ }
}
//断开OPC链接
public void Disconnect()
{
try
{
OPCServerState state = (OPCServerState)(_OPCServer.ServerState);
if (state != OPCServerState.OPCDisconnected)
{
for (int i = 0; i < Groups.Count; i++)
{
Groups[i].DetachFromServer(this);//解除各个组的注册
}
_OPCServer.ServerShutDown -= OPCServer_ServerShutDown;
OPCServer_ServerShutDown(string.Empty);//关闭链接
}
}
catch
{ }
}
