// This example shows how to write a value into a single item.
class procedure WriteItemValue.Main;
var
Client: OpcLabs_EasyOpcClassic_TLB._EasyDAClient;
begin
// Instantiate the client object
Client := CoEasyDAClient.Create;
try
Client.WriteItemValue('', 'OPCLabs.KitServer.2', 'Simulation.Register_I4', 12345);
except
on E: EOleException do
begin
WriteLn(Format('*** Failure: %s', [E.GetBaseException.Message]));
Exit;
end;
end;
end;
// This example shows how to write a value into a single item.
$Client = new COM("OpcLabs.EasyOpc.DataAccess.EasyDAClient");
try
{
$value = $Client->WriteItemValue("", "OPCLabs.KitServer.2", "Simulation.Register_I4", 12345);
}
catch (com_exception $e)
{
printf("*** Failure: %s\n", $e->getMessage());
Exit();
}
// This example shows how to write a value into a single item.
mle_outputtext.Text = ""
// Instantiate the client object
OLEObject client
client = CREATE OLEObject
client.ConnectToNewObject("OpcLabs.EasyOpc.DataAccess.EasyDAClient")
// Modify value of an item
TRY
client.WriteItemValue("", "OPCLabs.KitServer.2", "Simulation.Register_I4", 12345)
CATCH (OLERuntimeError oleRuntimeError)
mle_outputtext.Text = mle_outputtext.Text + "*** Failure: " + oleRuntimeError.Description + "~r~n"
RETURN
END TRY
mle_outputtext.Text = mle_outputtext.Text + "~r~n"
mle_outputtext.Text = mle_outputtext.Text + "Finished." + "~r~n"
Rem This example shows how to write a value into a single item.
Private Sub WriteItemValue_Main_Command_Click()
OutputText = ""
' Instantiate the client object
Dim client As New EasyDAClient
On Error Resume Next
Call client.WriteItemValue("", "OPCLabs.KitServer.2", "Simulation.Register_I4", 12345)
If Err.Number <> 0 Then
OutputText = OutputText & "*** Failure: " & Err.Source & ": " & Err.Description & vbCrLf
Exit Sub
End If
On Error GoTo 0
End Sub
# This example shows how to write a value into a single item.
# The Python for Windows (pywin32) extensions package is needed. Install it using "pip install pypiwin32".
# CAUTION: We now recommend using Python.NET package instead. Full set of examples with Python.NET is available!
import win32com.client
from pywintypes import com_error
# Instantiate the client object
client = win32com.client.Dispatch('OpcLabs.EasyOpc.DataAccess.EasyDAClient')
# Perform the operation
try:
client.WriteItemValue('', 'OPCLabs.KitServer.2', 'Simulation.Register_I4', 12345)
except com_error as e:
print('*** Failure: ' + e.args[2][1] + ': ' + e.args[2][2])
exit()
Rem This example shows how to write a value into a single item.
Option Explicit
Dim Client: Set Client = CreateObject("OpcLabs.EasyOpc.DataAccess.EasyDAClient")
On Error Resume Next
Client.WriteItemValue "", "OPCLabs.KitServer.2", "Simulation.Register_I4", 12345
If Err.Number <> 0 Then
WScript.Echo "*** Failure: " & Err.Source & ": " & Err.Description
WScript.Quit
End If
On Error Goto 0
