private bool InitServerConn()
{
bool retValue = false;
Console.WriteLine("正在尝试连接到OPCServer");
while (retrycount > 0)
{
try
{
rsLinxOPCDA = new RSLinxOPCDA();
bool isConnected = rsLinxOPCDA.Connect(ConnnectionUrl);
if (isConnected)
{
Logger.Info(string.Format("连接到OPC服务器{0}成功", ConnnectionUrl));
rsLinxOPCDA.CreateGroup(ConnnectionGroups, nFrequency);
}
if (tagList != null && tagList.Count > 0)
{
foreach (var item in tagList)
{
rsLinxOPCDA.AddItem(item.id);
}
}
retValue = true;
return(retValue);
}
catch (Exception ex)
{
if (retrycount == 5)
{
Logger.Fatal("执行InitServerConn方法出错！" + ex.ToString());
}
}
finally
{
if (!retValue)
{
Console.WriteLine(string.Format("连接到OPC服务器失败，剩余尝试次数为{0}！", retrycount.ToString()));
System.Threading.Thread.Sleep(30000);
}
}
retrycount--;
}
return(retValue);
}
protected void ReadItems(RSLinxOPCDA rsLinxOPCDA)
{
do
{
try
{
Opc.Da.ItemValueResult[] itemValues;
itemValues = rsLinxOPCDA.m_server.Read(rsLinxOPCDA.m_items);
foreach (Opc.Da.ItemValueResult itemValue in itemValues)
{
Console.WriteLine("Time: " + itemValue.Timestamp.ToString() + " Item: " + itemValue.ItemName + ", value: " + itemValue.Value.ToString());
}
System.Threading.Thread.Sleep(rsLinxOPCDA.m_groupState.UpdateRate);
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
} while (true);
}
