Closed barosz closed 10 years ago
what error are you getting?
If I remember correctly that's the dll that's distributed by OPC foundation and it's definitely not the dll I'm referring to anyhow -S
On Tue, Jan 21, 2014 at 8:17 AM, barosz notifications@github.com wrote:
Microsoft Visual C# 2010 Express
A reference to 'C:\WINDOWS\system32\OPCDAAuto.dll' could not be added. Please make sure that the file is accessible, and that it is a valid assembly or COM component.
OK
Reply to this email directly or view it on GitHub: https://github.com/sevki/Posts/issues/2#issuecomment-32824144
Yes you are correct that's dll distributed by OPC foundation. I have just thought that you use from the source you may rely (not from unknown source).
I think you have a better chance of getting something to work if you actually try to find the dll mentioned.
Hi sevki, Hope u r doing well.
As I know much little about computer programming, so I am facing problem in trying to get values from local OPC server (Kepware), Em using OPCautomation.dll and your sample code as below.,
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using OPCAutomation;
namespace WindowsFormsApplication8 { public partial class Form1 : Form {
OPCServer ObjOPCServer;
OPCGroups ObjOPCGroups;
OPCGroup ObjOPCGroup;
string OPCServerName;
public Form1()
{
InitializeComponent();
try
{
InitializeComponent();
OPCServerName = "kepware.KEPServerEX.V6";
ObjOPCServer = new OPCServer();
ObjOPCServer.Connect(OPCServerName, "");
ObjOPCGroups = ObjOPCServer.OPCGroups;
ObjOPCGroup = ObjOPCGroups.Add("FX.TrialG1");
ObjOPCGroup.OPCItems.AddItem("FX.TrialG1.Encoder",1);
ObjOPCGroup.DataChange += new DIOPCGroupEvent_DataChangeEventHandler(ObjOPCGroup_DataChange);
ObjOPCGroup.UpdateRate = 10;
ObjOPCGroup.IsActive = true;
ObjOPCGroup.IsSubscribed = true;
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
}
private void ObjOPCGroup_DataChange(int TransactionID, int NumItems, ref Array ClientHandles, ref Array ItemValues, ref Array Qualities, ref Array TimeStamps)
{
for (int i = 1; i <= NumItems; i++)
{
if ((Convert.ToInt32(ClientHandles.GetValue(i)) == 1))
{
textBox1.Text = ItemValues.GetValue(i).ToString();
}
}
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
}
}
After debugging and connected OPC server, C # application is running with out error but it is not getting/showing any value in text box. . However if i run application in disconnected mode of OPC server, it gives an error after application start,error showed in attached picture.
Thanks, Haris
I have got one question - how to add OPCAutomation.dll in Microsoft Visual C# ? I tried to do it by adding refenece to project but it is not working (I am receiving an error).