public void GetData(ref List <OPCItems> list)
{
if (TotalItemNumber != list.Count)
{
opcgrp_arrayQualities = new int[0];
opcgrp_arrayHandles = new Int32[0];
opcgrp_arraySHandles = new int[0];
opcgrp_arrayErrors = new int[0];
opcgrp_arrayValues = new int[0];
opcgrp_arrayPaths = new string[0];
opcgrp_itemVar = new OPCItems[0];
TotalItemNumber = 0;
foreach (OPCItems item in list)
{
AddItem(item.Tag, item.Address, item.Description, item.PLCName);
this.Create();
}
}
this.GetData();
for (int i = 0; i < list.Count; i++)
{
OPCItems oPCItems = this.GetTagItem(list[i].Tag);
if (oPCItems.Quality < 192)
{
Quality = "Bad";
}
if (list[i].Value != oPCItems.Value)
{
list[i].Value = oPCItems.Value;
TransationSum += 1;
}
list[i].Quality = oPCItems.Quality;
}
}
public Boolean AddItem(string newTag, string newAddress, string newDescprition, string newPLCName = null)
{
TotalItemNumber++;
opcgrp_arrayPaths = ResizeArray(opcgrp_arrayPaths, TotalItemNumber + 1);
opcgrp_arrayHandles = ResizeArray(opcgrp_arrayHandles, TotalItemNumber + 1);
opcgrp_itemVar = ResizeArray(opcgrp_itemVar, TotalItemNumber + 1);
opcgrp_arrayValues = ResizeArray(opcgrp_arrayValues, TotalItemNumber + 1);
opcgrp_arrayErrors = ResizeArray(opcgrp_arrayErrors, TotalItemNumber + 1);
opcgrp_arraySHandles = ResizeArray(opcgrp_arraySHandles, TotalItemNumber + 1);
opcgrp_arrayQualities = ResizeArray(opcgrp_arrayQualities, TotalItemNumber + 1);
OPCItems itemV;
itemV = new OPCItems
{
Tag = newTag.Trim(),
Address = newAddress.Trim(),
Description = newDescprition.Trim(),
PLCName = newPLCName == null?PLCName.Trim() : newPLCName.Trim()
};
opcgrp_arrayHandles.SetValue(TotalItemNumber, TotalItemNumber);
opcgrp_itemVar.SetValue(itemV, TotalItemNumber);
opcgrp_arrayPaths.SetValue(newPLCName.Trim() + newAddress.Trim(), TotalItemNumber);
return(true);
}
public Boolean GetData()
{
try
{
Transacting = true;
TransactionFlag = true;
//for (; IntData.readingOPC; ) Thread.Sleep(10);
if (IntData.IsOPCConnected)
{
object timestamps = new object(); //store the timestamp of the read
object qualities = new object();
IntData.IsOPCConnected = true;
opcgrp_server = new OPCServer();
opcgrp_server.Connect(ServerName);
opcgrp_group = opcgrp_server.OPCGroups.Add(GroupName);
TotalItemNumber = opcgrp_arrayPaths.Length - 1;
opcgrp_group.OPCItems.DefaultIsActive = true;
opcgrp_group.OPCItems.AddItems(TotalItemNumber, opcgrp_arrayPaths, opcgrp_arrayHandles, out opcgrp_arraySHandles, out opcgrp_arrayErrors);
opcgrp_group.SyncRead((short)OPCAutomation.OPCDataSource.OPCDevice, TotalItemNumber, ref opcgrp_arraySHandles, out opcgrp_arrayValues, out opcgrp_arrayErrors, out qualities, out timestamps);
var qualitiesList = new List <int>();
var errorsList = new List <int>();
foreach (var quality in (Array)qualities)
{
qualitiesList.Add(Convert.ToInt32(quality));
}
foreach (var error in opcgrp_arrayErrors)
{
errorsList.Add(Convert.ToInt32(error));
}
for (int i = 1; i <= TotalItemNumber; i++)
{
OPCItems opcitem = new OPCItems();
opcitem = (OPCItems)opcgrp_itemVar.GetValue(i);
opcitem.Quality = qualitiesList[i - 1];
//opcitem.Error = errorsList[i - 1];
if (opcgrp_arrayValues.GetValue(i) is System.Int32)
{
opcitem.Value = (int)opcgrp_arrayValues.GetValue(i);
}
else if (opcgrp_arrayValues.GetValue(i) is System.Double)
{
opcitem.Value = (double)opcgrp_arrayValues.GetValue(i);
}
else
{
opcitem.Value = opcgrp_arrayValues.GetValue(i).ToString();
}
if (opcitem.Quality == 0)
{
IntData.IsOPCConnected = false;
Quality = "Bad";
}
opcgrp_itemVar.SetValue(opcitem, i);
}
if (!IntData.IsOPCConnected)
{
throw new Exception("The PLC connection is broken!");
}
}
opcgrp_server.Disconnect();
Transacting = false;
//log.Success();
return(true);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return(false);
}
}
