public ResultSingleModel ReadSingleGroup(string hostip, Int32 port, string FC, string vargroup)
{ //instance
IedConnection con = new IedConnection();
try
{ //connection
con.Connect(hostip, port);
//exctract fc
data_extract dataExtract = new data_extract();
var FunctionCode = dataExtract.ExtractFC(FC);
//read group
MmsValue mmsresult = con.ReadValue(vargroup, FunctionCode);
//con close
con.Abort();
//result list
dynamic ValueTuple = mmsresult;
Read_Result listresult = null;
Int16 Quality;
DateTimeOffset Timestamp;
List <dynamic> valueArray = new List <dynamic>();
if (mmsresult.GetType() == MmsType.MMS_STRUCTURE)
{
if (mmsresult.Size() == 4)
{
ValueTuple = dataExtract.ExtractValue(mmsresult.GetElement(0));
Quality = dataExtract.ExtractValue(mmsresult.GetElement(2));
Timestamp = dataExtract.ExtractValue(mmsresult.GetElement(3));
}
else
{
ValueTuple = dataExtract.ExtractValue(mmsresult.GetElement(0));
Quality = dataExtract.ExtractValue(mmsresult.GetElement(1));
Timestamp = dataExtract.ExtractValue(mmsresult.GetElement(2));
}
listresult = new Read_Result
{
Address = vargroup,
Value = ValueTuple,
Quality = Quality,
Timestamp = Timestamp
};
}
ResultSingleModel result = new ResultSingleModel()
{
data = listresult,
error = false,
errormessage = null
};
//destroy instance
con.Dispose();
//result
return(result);
}
catch (IedConnectionException e)
{
ResultSingleModel result = new ResultSingleModel()
{
data = null,
error = true,
errormessage = e.Message.ToString()
};
//insert logs into db
Submission dbinsert = new Submission
{
CreatedAt = DateTime.Now,
Content = e.Message.ToString()
};
_subSvc.Create(dbinsert);
//destroy instance
con.Dispose();
//error result
return(result);
}
}
public ResultMultipleModel ReadMultipleGroups(string hostip, Int32 port, string logicaldevicename, string[] vargroup)
{ //instance
IedConnection con = new IedConnection();
try
{ //connection
con.Connect(hostip, port);
//list variable group
var variable_group = new List <string>();
foreach (string address in vargroup)
{
variable_group.Add(address);
}
//mms connecton
MmsConnection mmsConnection = con.GetMmsConnection();
//read data
MmsValue mmsresult = mmsConnection.ReadMultipleVariables(logicaldevicename, variable_group);
//connection close
con.Abort();
//result list
data_extract dataExtract = new data_extract();
dynamic ValueTuple = null;
Int16 Quality;
DateTimeOffset Timestamp;
Read_Result listresult = null;
List <Read_Result> Variableset = new List <Read_Result>();
int i = 0;
foreach (MmsValue address in mmsresult)
{
if (address.Size() == 4)
{
ValueTuple = dataExtract.ExtractValue(address.GetElement(0));
Quality = dataExtract.ExtractValue(address.GetElement(2));
Timestamp = dataExtract.ExtractValue(address.GetElement(3));
}
else
{
ValueTuple = dataExtract.ExtractValue(address.GetElement(0));
Quality = dataExtract.ExtractValue(address.GetElement(1));
Timestamp = dataExtract.ExtractValue(address.GetElement(2));
}
listresult = new Read_Result
{
Address = variable_group[i],
Value = ValueTuple,
Quality = Quality,
Timestamp = Timestamp
};
Variableset.Add(listresult);
i = i + 1;
}
ResultMultipleModel result = new ResultMultipleModel()
{
data = Variableset,
error = false,
errormessage = null
};
//destroy instance
con.Dispose();
//result
return(result);
}
catch (IedConnectionException e)
{
ResultMultipleModel result = new ResultMultipleModel()
{
data = null,
error = true,
errormessage = e.Message.ToString()
};
//insert logs into db
Submission dbinsert = new Submission
{
CreatedAt = DateTime.Now,
Content = e.Message.ToString()
};
_subSvc.Create(dbinsert);
//destroy instance
con.Dispose();
//error result
return(result);
}
}
public Read_Result Read_Classic(string OPCURL, string UpdateInterval, string ItemIds)
{
try
{
Read_Result Read_Result = new Read_Result(); RegisteredTag NewRegisteredTag;
if (ItemIds.IsNullOrWhiteSpace())
{
return(Read_Result);
}
Opc.Da.Server ConnectedOPDAServer = ConnectToOPCServer(OPCURL);
if (ConnectedOPDAServer == null)
{
return new Read_Result()
{
success = false, result = null, error = "Fail to Connect to OPC Server '" + OPCURL + "'"
}
}
;
string[] ItemIdsSplit = ItemIds.Split(',');
int LastIndex = ItemIdsSplit.Count() - 1;
if (ItemIdsSplit[LastIndex].IsNullOrEmpty())
{
ItemIdsSplit = ItemIdsSplit.RemoveAt(LastIndex);
}
if (ItemIdsSplit.Count() > 0)
{
int UpdateIntervalInMS = UpdateInterval.ToInt(1000);
if (UpdateIntervalInMS < 250)
{
UpdateIntervalInMS = 250;
}
foreach (string ItemId in ItemIdsSplit)
{
//if (ItemId.IsNullOrWhiteSpace()) continue;
//Check if the Item has already been subscribed
if (this.RegisteredTags.TryGetValue(ItemId, out RegisteredTag FoundRegisteredTag))
{
//Straight forward case, simply obtain data
if (UpdateIntervalInMS >= FoundRegisteredTag.UpdateIntervalInMS)
{
FoundRegisteredTag.LastCalled = DateTime.Now;
Read_Result.result.Add(new DataValue(FoundRegisteredTag.Id, true, FoundRegisteredTag.TSUTC, FoundRegisteredTag.SourceTSUTC, FoundRegisteredTag.Value, FoundRegisteredTag.QualityOK));
continue;
}
//If the Update Interval is more Frequent we need to remove the tag and subscribe it to a group which has higher update rate
else
{
FoundRegisteredTag.UpdateIntervalInMS = UpdateIntervalInMS;
Subscription SubscriptionWhereTagIs = ConnectedOPDAServer.Subscriptions.FindSubcriptionThatHasItem(ItemId, out Item ItemFound);
if (SubscriptionWhereTagIs != null)
{
SubscriptionWhereTagIs.RemoveItems(new ItemIdentifier[] { ItemFound }); //Remove From Subscription
}
}
}
//Tag WAS not found in Registered Tags Dictionary (or was removed due to update interval changed)
//Check if there are any subscriptions which have same Update Interval and has room for items
NewRegisteredTag = new RegisteredTag(ItemId, UpdateIntervalInMS);
ItemValueResult readResult;
Subscription SuitableSubscription = ConnectedOPDAServer.Subscriptions.FindSubcription(S => S.State.UpdateRate == UpdateIntervalInMS && S.Items.Count() < this.OPCGroupSizeLimit);
if (SuitableSubscription != null)
{
//if a suitable subscription was found, Add item to this subscription
ItemResult[] IR = SuitableSubscription.AddItems(new Item[] { new Item()
{
ItemName = ItemId
} });
if (IR.Count() <= 0)
{
Read_Result.result.Add(new DataValue(ItemId, false, DateTime.UtcNow, DateTime.MinValue, "Failed to Add Item to OPC Group", false)); continue;
}
if (IR[0].ResultID == ResultID.S_OK)
{
readResult = SuitableSubscription.Read(new Item[] { IR[0] })[0];
}
else
{
Read_Result.result.Add(new DataValue(ItemId, false, DateTime.UtcNow, DateTime.MinValue, IR[0].ResultID.ToString(), false)); continue;
}
}
else
{
//If no Subscriptions found, create new Subscription
ISubscription NewSubscription = ConnectedOPDAServer.CreateSubscription(new SubscriptionState()
{
UpdateRate = UpdateIntervalInMS
});
NewSubscription.DataChanged -= new DataChangedEventHandler(this.OnOPCSubscriptionDataChanged);
NewSubscription.DataChanged += new DataChangedEventHandler(this.OnOPCSubscriptionDataChanged);
ItemResult[] IR = NewSubscription.AddItems(new Item[] { new Item()
{
ItemName = ItemId
} });
if (IR.Count() <= 0)
{
Read_Result.result.Add(new DataValue(ItemId, false, DateTime.UtcNow, DateTime.MinValue, "Failed to Add Item to new OPC Group", false)); continue;
}
if (IR[0].ResultID == ResultID.S_OK)
{
readResult = NewSubscription.Read(new Item[] { IR[0] })[0];
}
else
{
Read_Result.result.Add(new DataValue(ItemId, false, DateTime.UtcNow, DateTime.MinValue, IR[0].ResultID.ToString(), false)); continue;
}
}
NewRegisteredTag.TSUTC = DateTime.UtcNow;
if (readResult.TimestampSpecified)
{
NewRegisteredTag.SourceTSUTC = readResult.Timestamp;
}
else
{
NewRegisteredTag.SourceTSUTC = DateTime.UtcNow;
}
if (readResult.Quality == Quality.Good)
{
NewRegisteredTag.QualityOK = true;
if (readResult.Value is string || readResult.Value.IsNumericType())
{
NewRegisteredTag.Value = (IComparable)readResult.Value;
}
}
else
{
NewRegisteredTag.QualityOK = false;
NewRegisteredTag.Value = null;
}
Read_Result.result.Add(new DataValue(NewRegisteredTag.Id, true, NewRegisteredTag.TSUTC, NewRegisteredTag.SourceTSUTC, NewRegisteredTag.Value, NewRegisteredTag.QualityOK));
//Add New Tag to the Registered Tags
NewRegisteredTag.LastCalled = DateTime.Now;
RegisteredTags.Add(ItemId, NewRegisteredTag);
}
}
return(Read_Result);
}
catch (Exception ex)
{
return(new Read_Result()
{
success = false, error = ex.ToString()
});
}
}
