} // end ProcessCommandLine
public void Terminate()
{
if (m_daSubscription.CurrentState != EnumObjectState.DISCONNECTED)
{
m_daSubscription.Disconnect(new ExecutionOptions());
}
if (m_daSession.CurrentState != EnumObjectState.DISCONNECTED)
{
m_daSession.Disconnect(new ExecutionOptions());
}
m_daSubscription.RemoveDaItem(m_daItem1);
m_daSubscription.RemoveDaItem(m_daItem2);
m_daSubscription.RemoveDaItem(m_daItem3);
m_daSubscription.RemoveDaItem(m_daItem4);
m_daSubscription.RemoveDaItem(m_daItem5);
m_daSubscription.RemoveDaItem(m_daItem6);
m_daSession.RemoveDaSubscription(m_daSubscription);
GetApplication().RemoveDaSession(m_daSession);
GetApplication().Terminate();
m_daSession = null;
m_daSubscription = null;
m_daItem1 = null;
m_daItem2 = null;
m_daItem3 = null;
m_daItem4 = null;
m_daItem5 = null;
m_daItem6 = null;
} // end Terminate
} // end InitializeDaObjects
public string ReadItem()
{
string message = String.Empty;
try
{
uint readCount = 1;
MyDaItem[] m_itemList = new MyDaItem[readCount];
m_itemList[0] = m_daItem1;
ValueQT[] m_values = null;
int[] m_results = null;
if (ResultCode.SUCCEEDED(
m_daSubscription.Read(
0,
m_itemList,
out m_values,
out m_results,
null)))
{
message += " \nRead item synchronously using subscription \n";
for (int i = 0; i < m_values.Length; i++)
{
if (ResultCode.SUCCEEDED(m_results[i]))
{
message += " " + m_itemList[i].Id + " - ";
message += m_values[i].ToString() + "\n\n";
}
else
{
message += "Read failed for item " + m_itemList[i].Id + "\n\n";
} // end if...else
} // end for
}
else
{
message += " Subscription synchronous read failed!" + "\n\n";
} // end if...else
}
catch (Exception exc)
{
GetApplication().Trace(
EnumTraceLevel.ERR,
EnumTraceGroup.USER,
"OpcClient::ReadItem",
exc.ToString());
} // end try...catch
return(message);
} // end ReadItem
} // end HandleValueChanged
public static void HandlePerformStateTransition(
ObjectSpaceElement sender,
uint executionContext,
int result)
{
if (ResultCode.SUCCEEDED(result))
{
MyDaItem item = sender as MyDaItem;
System.Console.WriteLine(sender + " " + item.Id + " Performed state transition - " + executionContext);
}
else
{
System.Console.WriteLine(sender + " Performed state transition failed! Result: " + result);
}
} // end HandlePerformStateTransition
//--
#endregion
#region Private Members
//---------------------
#region Private Attributes
//------------------------
//--
#endregion
//--
#endregion
#region Public Methods
//---------------------
//--
#endregion
#region Public Properties
//-----------------------
//--
#endregion
#region Handles
public static void HandleStateChanged(ObjectSpaceElement sender, EnumObjectState state)
{
MyDaItem item = sender as MyDaItem;
System.Console.WriteLine(item + " " + item.Id + " State Changed - " + state);
} // end HandleStateChanged
} //end ReadItems
public void WriteItems(bool sync)
{
DateTime writeDateTime = new DateTime();
if (sync)
{
ValueQT[] inValues = new ValueQT[4];
SByte[] v1 = new SByte[5];
v1[0] = 7; v1[1] = 8; v1[2] = 9; v1[3] = 10; v1[4] = 11;
inValues[0] = new ValueQT(v1, EnumQuality.QUALITY_NOT_SET, writeDateTime);
System.String v2 = "abcdefghijklmnopqrstuvxyzABCDEFGHIJKLMNOPQRSTUVXYZ";
inValues[1] = new ValueQT(v2, EnumQuality.QUALITY_NOT_SET, writeDateTime);
int v3 = v1[2];
inValues[2] = new ValueQT(v3, EnumQuality.QUALITY_NOT_SET, writeDateTime);
//Prepare bounded array (these are the values to be written)
int[] zeroBoundArray = new int[] { 1, 2, 3 };
int lowBound = 1;
Array lowBoundArray = Array.CreateInstance(typeof(object), new int[] { zeroBoundArray.Length }, new int[] { lowBound });
zeroBoundArray.CopyTo(lowBoundArray, lowBound);
//end prepare bounded array
inValues[3] = new ValueQT(lowBoundArray, EnumQuality.QUALITY_NOT_SET, writeDateTime);
int result = (int)EnumResultCode.E_FAIL;
MyDaItem[] inItems = new MyDaItem[4];
inItems.SetValue(m_daItem3, 0);
inItems.SetValue(m_daItem4, 1);
inItems.SetValue(m_daItem5, 2);
inItems.SetValue(m_daItem6, 3);
int[] inResults = new int[4];
if (ResultCode.SUCCEEDED(result = m_daSubscription.Write(inItems, inValues, out inResults, new ExecutionOptions())))
{
System.Console.WriteLine(" Subscription synchronous write succeeded");
for (int i = 0; i < inValues.Length; i++)
{
if (inResults[i] >= 0)
{
System.Console.WriteLine(inValues[i].ToString());
System.Console.WriteLine();
}
else
{
System.Console.WriteLine(" Item synchronous write failed! " + inItems[i].Id + " [ResultID: " + inResults[i] + " ]");
}
}
}
else
{
System.Console.WriteLine("Subscription synchronous write failed! Result: " + result);
}
} // end if
else
{
ValueQT[] inValues = new ValueQT[4];
SByte[] v1 = new SByte[5];
v1[0] = 7; v1[1] = 8; v1[2] = 9; v1[3] = 10; v1[4] = 11;
inValues[0] = new ValueQT(v1, EnumQuality.QUALITY_NOT_SET, writeDateTime);
System.String v2 = "SOFTING";
inValues[1] = new ValueQT(v2, EnumQuality.QUALITY_NOT_SET, writeDateTime);
int v3 = 6;
inValues[2] = new ValueQT(v3, EnumQuality.UNCERTAIN, writeDateTime);
//Prepare bounded array (these are the values to be written)
int[] zeroBoundArray = new int[] { 4, 5, 6 };
int lowBound = 1;
Array lowBoundArray = Array.CreateInstance(typeof(object), new int[] { zeroBoundArray.Length }, new int[] { lowBound });;
zeroBoundArray.CopyTo(lowBoundArray, lowBound);
//end prepare bounded array
inValues[3] = new ValueQT(lowBoundArray, EnumQuality.QUALITY_NOT_SET, writeDateTime);
MyDaItem[] inItems = new MyDaItem[4];
inItems[0] = m_daItem3;
inItems[1] = m_daItem4;
inItems[2] = m_daItem5;
inItems[3] = m_daItem6;
int[] inResults = new int[4];
m_daSubscription.Write(inItems, inValues, out inResults, m_executionOptions);
m_executionOptions.ExecutionContext++;
} // end else
} //end WriteItems
} // end Terminate
public int InitializeDaObjects()
{
int connectResult = (int)EnumResultCode.E_FAIL;
m_executionOptions = new ExecutionOptions();
m_executionOptions.ExecutionType = EnumExecutionType.ASYNCHRONOUS;
m_executionOptions.ExecutionContext = 0;
m_itemList = new MyDaItem[6];
m_itemIds = new string[] { "maths.sin", "time.local.second", "increment.UI1 array", "increment.BSTR", "secure.I2", "IOP.static.I1 array" };
try
{
// TODO add your server URL here
// this is the server url for Softing OPCToolbox Demo Server
// first choice is COM-DA
string url = "opcda:///Softing.OPCToolboxDemo_ServerDA.1/{2E565242-B238-11D3-842D-0008C779D775}";
//uncomment if you need an XML-DA access
// string url = "http://localhost:8079/OPC/DA";
m_daSession = new MyDaSession(url);
if (!m_daSession.Valid)
{
return(connectResult);
}
m_daSubscription = new MyDaSubscription(1000, m_daSession);
if (!m_daSubscription.Valid)
{
return(connectResult);
}
m_daItem1 = new MyDaItem("maths.sin", m_daSubscription);
if (!m_daItem1.Valid)
{
return(connectResult);
}
m_itemList[0] = m_daItem1;
m_daItem2 = new MyDaItem("time.local.second", m_daSubscription);
if (!m_daItem2.Valid)
{
return(connectResult);
}
m_itemList[1] = m_daItem2;
m_daItem3 = new MyDaItem("increment.UI1 array", m_daSubscription);
if (!m_daItem3.Valid)
{
return(connectResult);
}
m_itemList[2] = m_daItem3;
m_daItem4 = new MyDaItem("increment.BSTR", m_daSubscription);
if (!m_daItem4.Valid)
{
return(connectResult);
}
m_itemList[3] = m_daItem4;
m_daItem5 = new MyDaItem("secure.I2", m_daSubscription);
if (!m_daItem5.Valid)
{
return(connectResult);
}
m_itemList[4] = m_daItem5;
m_daItem6 = new MyDaItem("IOP.static.I1 array", m_daSubscription);
if (!m_daItem6.Valid)
{
return(connectResult);
}
m_itemList[5] = m_daItem6;
connectResult = m_daSession.Connect(true, false, m_executionOptions);
}
catch (Exception exc)
{
GetApplication().Trace(
EnumTraceLevel.ERR,
EnumTraceGroup.USER,
"OpcClient::InitializaDaObjects",
exc.ToString());
} // end try...catch
return(connectResult);
} // end InitializeDaObjects