Hi gurus,
I wrote a basic web app to communicate with the opc server. I am able to connect to the server, but i can't get the value from opc, i am not sure what to fill in the serverhandle. and from the specs, the example uses SET, which doesn't exist anymore in the asp and
vb.net. what should i replace it with?
for eg:
TextBox2.Text = ConnectedGroup.OPCItems.GetOPCItem(serverhandle)
Below is the specs example for OPC.
Quote:
Dim AnOPCItem as OPCItem
Set OPCItem=GetOPCItem(SomeItemServerHandle)
Dim Source as Integer
Dim Value as Variant
Dim Quality as Variant
Dim TimeStamp as Variant
Source=OPC_DS_DEVICE
AnOPCItem.Read Source,ServerHandles,Value,Quality,TimeStamp
'process the values
TextBox.Text=Value
|
Hope to hear from someone.
Thanks!
dBforums
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Basic OPC problem with GetOPCItem
06-21-11, 17:32
Basic OPC problem with GetOPCItem
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