'UsageDim instance As _EasyDAClient Dim handle As Integer instance.UnsubscribeItem(handle)
This member or type is for use from COM. It is not meant to be used from .NET or Python. Refer to the corresponding .NET member or type instead, if you are developing in .NET or Python.
Rem This example shows how unsubscribe from changes of a single item. Rem Rem Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . Rem OPC client and subscriber examples in VBScript on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-VBScript . Rem Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own Rem a commercial license in order to use Online Forums, and we reply to every post. Option Explicit Dim Client: Set Client = CreateObject("OpcLabs.EasyOpc.DataAccess.EasyDAClient") WScript.ConnectObject Client, "Client_" WScript.Echo "Subscribing..." Dim handle: handle = Client.SubscribeItem("", "OPCLabs.KitServer.2", "Simulation.Random", 1000) WScript.Echo "Waiting for 10 seconds..." WScript.Sleep 10*1000 WScript.Echo "Unsubscribing..." Client.UnsubscribeItem handle WScript.Echo "Waiting for 10 seconds..." WScript.Sleep 10*1000 Sub Client_ItemChanged(Sender, e) If Not (e.Succeeded) Then WScript.Echo "*** Failure: " & e.ErrorMessageBrief Exit Sub End If WScript.Echo e.Vtq End Sub