/// <summary>
/// Tag constructor
/// </summary>
/// <param name="myDSC">parameters from Tags table</param>
/// <param name="myStation">pointer to interface that allow to change priority of the station</param>
internal Tag(ComunicationNet.TagsRow myDSC, IStationState myStation)
: base(myDSC.Name, null, qualityBits.badNotConnected, (ItemAccessRights)myDSC.AccessRights, GetDataTypeFromConfig(myDSC))
{
switch ((StateTrigger)myDSC.StateTrigger)
{
case StateTrigger.StateHigh:
stateHihgTriger = true;
break;
case StateTrigger.StateLow:
stateLowTriger = true;
break;
default:
break;
}
stateMask = (int)myDSC.StateMask;
this.myStation = myStation;
this.EuType = Opc.Da.euType.noEnum;
ItemPropertyCollection itemPropertyCollection = new ItemPropertyCollection();
foreach (ComunicationNet.ItemPropertiesTableRow row_property in myDSC.GetItemPropertiesTableRows())
{
try
{
PropertyDescription prop_dsc =
PropertyDescription.Find(
new PropertyID(
new XmlQualifiedName(row_property.ID_Name_Name, row_property.ID_Name_Namespace)
));
ItemProperty _itemProperty = new ItemProperty
{
ID = prop_dsc.ID,
Value = row_property.Value
};
if (prop_dsc.ID != Opc.Da.Property.DATATYPE) //this property is managed differently
// as GetDataTypeFromConfig( myDSC )
// at the constructor
{
if (prop_dsc.ID == Opc.Da.Property.HI_LIMIT ||
prop_dsc.ID == Opc.Da.Property.LO_LIMIT ||
prop_dsc.ID == Opc.Da.Property.HIHI_LIMIT ||
prop_dsc.ID == Opc.Da.Property.LOLO_LIMIT ||
prop_dsc.ID == Opc.Da.Property.LOWEU ||
prop_dsc.ID == Opc.Da.Property.HIGHEU ||
prop_dsc.ID == Opc.Da.Property.SCANRATE
)
{
// this property contains double value
if (double.TryParse(row_property.Value, out double prop_value))
_itemProperty.Value = prop_value;
}
if (prop_dsc.ID == Opc.Da.Property.EUTYPE)
{
_itemProperty.Value = Opc.Da.euType.noEnum;
// this property contains vale from enum: Opc.Da.euType
foreach (Opc.Da.euType NEWeuType in Enum.GetValues(typeof(Opc.Da.euType)))
{
if (NEWeuType.ToString() == row_property.Value)
_itemProperty.Value = NEWeuType;
}
}
if (prop_dsc.ID == Opc.Da.Property.EUINFO)
{
//I assume that this is table of strings spited by ;
_itemProperty.Value = row_property.Value.Split(';');
}
itemPropertyCollection.Add(_itemProperty);
}
}
catch (Exception ex)
{
CommServerComponent.Tracer.TraceInformation(290, "DataBlock.Tag",
"Problem with property for item : " + myDSC.Name + ": " +
TraceEvent.GetMessageWithExceptionNameFromExceptionIncludingInnerException(ex));
}
}
try
{
this.AddProperties(itemPropertyCollection);
}
catch (Exception ex)
{
CommServerComponent.Tracer.TraceInformation(290, "DataBlock.Tag",
"Problem with many properties for item : " + myDSC.Name + ": " +
TraceEvent.GetMessageWithExceptionNameFromExceptionIncludingInnerException(ex));
}
}