public object RemoteRead()
{
var server = Parent.Parent as OpcServer;
Trace.Assert(server != null);
object result = null;
try
{
if (server.RunMode != RunMode.Release)
{
throw new InvalidOperationException(GlobalId + "只能在发布模式下读取远程数据");
}
object quality;
object timestamp;
_item?.Read((short)OPCDataSource.OPCDevice, out result, out quality, out timestamp);
Trace.WriteLine(GlobalId + " : " + result);
LocalWrite(result);
}
catch (Exception e)
{
result = null;
LocalWrite(null);
this.Error("读取失败, 错误原因:" + e);
}
return(result);
}
/// <summary>
/// 监视标签重载
/// </summary>
/// <param name="itemName"></param>
public void MonitorOPCItem(string itemName)
{
try
{
if (!this.clientHandleDict.ContainsKey(itemName))
{
//var bro = this.opcServer.CreateBrowser();
//bro.ShowBranches();
//foreach (var branch in bro)
//{
// Console.WriteLine(branch.ToString());
//}
var index = this.clientNameList.Count;
OPCAutomation.OPCItem tempItem = opcAGroup.OPCItems.AddItem(itemName, index);
TagItem item = new TagItem()
{
Name = itemName,
ClientHandler = index,
//ClientHandler = itemIndex,
ServerHandler = tempItem.ServerHandle,
};
this.clientNameList.Add(itemName);
this.clientHandleDict.Add(itemName, item);
object value, timeStamp, quality;
tempItem.Read(1, out value, out quality, out timeStamp);
}
}
catch
{
}
}
public OPCChangeModel ReadValue(string name)
{
if (this.clientHandleDict.ContainsKey(name))
{
OPCAutomation.OPCItem item = opcAGroup.OPCItems.GetOPCItem(this.clientHandleDict[name].ServerHandler);
object value, quality, timestamp;
item.Read(2, out value, out quality, out timestamp);
return(new OPCChangeModel()
{
Name = name,
Quality = (TagQuality)((short)quality),
Value = item.Value,
TimeStamp = (DateTime)timestamp,
});
}
return(null);
}