public HistoryData[] BatchRead(DataSource source, bool isSync, params ITag[] itemArray)
{
IntPtr pErrors;
int len = itemArray.Length;
int result = 0;
int[] arrHSrv = Array.ConvertAll(itemArray, c => c.Address.Start);
HistoryData[] values = new HistoryData[len];
if (isSync)
{
IntPtr pItemValues;
result = _sync.Read((OPCDATASOURCE)source, len, arrHSrv, out pItemValues, out pErrors);
if (HRESULTS.Succeeded(result))
{
for (int i = 0; i < len; i++)
{
var item = itemArray[i];
if (Marshal.ReadInt32(pErrors) == 0)
{
switch (item.Address.VarType)
{
case DataType.BOOL:
values[i].Value.Boolean = Marshal.ReadByte(pItemValues + 16) > 0;
break;
case DataType.BYTE:
values[i].Value.Byte = Marshal.ReadByte(pItemValues + 16);
break;
case DataType.WORD:
values[i].Value.Word = (ushort)Marshal.ReadInt16(pItemValues + 16);
break;
case DataType.SHORT:
values[i].Value.Int16 = Marshal.ReadInt16(pItemValues + 16);
break;
case DataType.DWORD:
values[i].Value.DWord = (uint)Marshal.ReadInt32(pItemValues + 16);
break;
case DataType.INT:
values[i].Value.Int32 = Marshal.ReadInt32(pItemValues + 16);
break;
case DataType.FLOAT:
float[] x = new float[1];
Marshal.Copy(pItemValues + 16, x, 0, 1);
values[i].Value.Single = x[0];
break;
case DataType.STR:
string str = Marshal.PtrToStringUni(Marshal.ReadIntPtr(pItemValues + 16));
StringTag tag = item as StringTag;
if (tag != null)
{
tag.String = str;
}
break;
}
values[i].ID = item.ID;
values[i].Quality = (QUALITIES)Marshal.ReadInt16(pItemValues + 12);
values[i].TimeStamp = Marshal.ReadInt64(pItemValues + 4).ToDateTime();
item.Update(values[i].Value, values[i].TimeStamp, values[i].Quality);
}
pItemValues += 32;
pErrors += 4;
}
Marshal.FreeCoTaskMem(pItemValues);
}
else
{
Marshal.FreeCoTaskMem(pItemValues);
return(null);
}
}
else
{
int cancelID = 0;
result = _async.Read(len, arrHSrv, 1, out cancelID, out pErrors);
}
Marshal.FreeCoTaskMem(pErrors);
return(values);
}
public void LSE_Connect()
{
IOPCServer m_OPCServer;
IOPCGroupStateMgt2 m_OPCGroup2;
IOPCItemMgt m_OPCItem;
IConnectionPointContainer m_OPCConnPointCntnr;
IConnectionPoint m_OPCConnPoint;
//---------Connect LSEOPC Server
Type typeofOPCserver = Type.GetTypeFromProgID("Intellution.LSEOPC");
m_OPCServer = (IOPCServer)Activator.CreateInstance(typeofOPCserver);
//----------Add Group for DA3.0
int m_iServerGroup;
int iRevisedUpdateRate;
Type typGrpMgt = typeof(IOPCGroupStateMgt2);
Guid guidGroupStateMgt = typGrpMgt.GUID;
object group = null;
m_OPCServer.AddGroup("Group1", 1, 1000, 0, IntPtr.Zero, IntPtr.Zero, 0, out m_iServerGroup, out iRevisedUpdateRate, ref guidGroupStateMgt, out group);
m_OPCGroup2 = (IOPCGroupStateMgt2)group;
//------------Add items
string[] ItemName = new string[iItemCount];
ItemName[0] = "Device0:D00000";
ItemName[1] = "Device0:D00001";
ItemName[2] = "Device0:D00002";
ItemName[3] = "Device0:D00003";
//ItemName[4] = "Device0:D00004";
//ItemName[5] = "Device0:D00005";
//ItemName[6] = "Device0:D00006";
//ItemName[7] = "Device0:D00007";
//ItemName[8] = "Device0:D00008";
//ItemName[9] = "Device0:D00009";
//ItemName[10] = "Device0:D00010";
//ItemName[11] = "Device0:D00011";
//ItemName[12] = "Device0:D00012";
//ItemName[13] = "Device0:D00013";
//ItemName[14] = "Device0:D00014";
//ItemName[15] = "Device0:D00015";
OPCITEMDEF[] itemDef = new OPCITEMDEF[iItemCount];
for (int i = 0; i < iItemCount; i++)
{
itemDef[i].szItemID = ItemName[i];
itemDef[i].bActive = 1;
itemDef[i].hClient = i;
}
m_OPCItem = (IOPCItemMgt)m_OPCGroup2;
IntPtr ppResult;
IntPtr ppErrors;
m_OPCItem.AddItems(iItemCount, itemDef, out ppResult, out ppErrors);
//----------Sync Read items
IOPCSyncIO2 m_Sync = (IOPCSyncIO2)m_OPCGroup2; //for DA3.0
OPCITEMRESULT itemResult;
int[] errors = new int[iItemCount];
int[] ServerHd = new int[iItemCount];
IntPtr posRes = ppResult;
for (int i = 0; i < iItemCount; i++)
{
itemResult = (OPCITEMRESULT)Marshal.PtrToStructure(posRes, typeof(OPCITEMRESULT));
if (errors[i] == 0)
{
ServerHd[i] = itemResult.hServer;
}
Marshal.DestroyStructure(posRes, typeof(OPCITEMRESULT));
posRes = (IntPtr)(posRes.ToInt32() + Marshal.SizeOf(typeof(OpcRcw.Da.OPCITEMRESULT)));
}
IntPtr ppItemVal;
m_Sync.Read(OPCDATASOURCE.OPC_DS_DEVICE, iItemCount, ServerHd, out ppItemVal, out ppErrors);
//--------------Read Data values
IntPtr posItem;
OPCITEMSTATE ItemState;
Values = new object[iItemCount];
Marshal.Copy(ppErrors, errors, 0, iItemCount);
posItem = ppItemVal;
try
{
for (int i = 0; i < iItemCount; i++)
{
ItemState = (OPCITEMSTATE)Marshal.PtrToStructure(posItem, typeof(OPCITEMSTATE));
if (errors[i] == 0)
{
Values[i] = ItemState.vDataValue;
//TimeStamps[i] = ItemState.ftTimeStamp;
//Qualities[i] = ItemState.wQuality;
}
Marshal.DestroyStructure(posItem, typeof(OPCITEMSTATE));
posItem = (IntPtr)(posItem.ToInt32() + Marshal.SizeOf(typeof(OpcRcw.Da.OPCITEMSTATE)));
}
}
catch
{
MessageBox.Show("Please confirm LSEOPC Server and Address (Devicename:Address)...");
Marshal.FreeCoTaskMem(ppItemVal);
Marshal.FreeCoTaskMem(ppErrors);
iItemCount = 0;
return;
}
Marshal.FreeCoTaskMem(ppItemVal);
Marshal.FreeCoTaskMem(ppErrors);
//------------Async Read items DA3.0 after Sync Read
int iKeepAliveTime = 10000;
m_OPCGroup2.SetKeepAlive(iKeepAliveTime, out iKeepAliveTime);
//Add for auto refresh Async read
m_OPCConnPointCntnr = (IConnectionPointContainer)m_OPCGroup2;
Guid guidDataCallback = Marshal.GenerateGuidForType(typeof(IOPCDataCallback));
m_OPCConnPointCntnr.FindConnectionPoint(ref guidDataCallback, out m_OPCConnPoint);
int m_iCallBackConnection;
//Async Read Callback Auto refresh set
m_OPCConnPoint.Advise((LSEOPC)this, out m_iCallBackConnection);
int wCancelID = 0;
IOPCAsyncIO3 m_Async = (IOPCAsyncIO3)m_OPCGroup2;
m_Async.Read(iItemCount, ServerHd, 1234567, out wCancelID, out ppErrors);
return;
}