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force refresh value

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support
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01 Mar 2022 18:09 #10677 by support

Replied by support on topic force refresh value

If you are not getting the right value/timestamp when specifying MaximumAge zero, the server is wrong.

Best regards

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ulix86
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01 Mar 2022 17:01 #10676 by ulix86

Replied by ulix86 on topic force refresh value

Thanks for the reply, I tried to set the MaximumAge property to zero as in the code below (vb6) but it doesn't work,
it return an old value probably from the cache.

What's wrong?

Dim ReadArguments3 As New UAReadArguments
    ReadArguments3.EndpointDescriptor.UrlString = Server
    ReadArguments3.EndpointDescriptor.UserIdentity.UserNameTokenInfo.UserName = user
    ReadArguments3.EndpointDescriptor.UserIdentity.UserNameTokenInfo.Password = Password
    ReadArguments3.NodeDescriptor.NodeId.expandedText = "ns=2;i=5386" 'cutting number
    ReadArguments3.ReadParameters.MaximumAge = 0
 
 
   Dim arguments(2) As Variant
    Set arguments(0) = ReadArguments1
    Set arguments(1) = ReadArguments2
    Set arguments(2) = ReadArguments3
 
 
    ' Obtain values. By default, the Value attributes of the nodes will be read.
    Dim results() As Variant
    results = Client.ReadMultipleValues(arguments)

Thank you
Best regards

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support
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01 Mar 2022 15:01 #10674 by support

Replied by support on topic force refresh value

Hello.

Specify reading from the device:

- opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...ad%20node%20from%20device.html

- opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...e%20nodes%20from%20device.html

- opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...s%20of%20OPC%20UA%20Nodes.html

Best regards

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ulix86
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01 Mar 2022 10:59 #10673 by ulix86

force refresh value was created by ulix86

Hello support,
is it possible to force refresh of a value?

I try to explain myself...
when I read "number of cutting" value from the server (also with UAExpert) the server gives me back an
old value (10 minutes before the request). Probably the problem comes from the server but I would like to know
if is possible to force Server gives me the current value.

In UAExpert is possible to move the data into the Data Acces View and force the update. Is it possibile to do something like this in QuickOpc?

Thank you
Best regards

Dim ReadArguments3 As New UAReadArguments
 ReadArguments3.EndpointDescriptor.UrlString = Server
 ReadArguments3.EndpointDescriptor.UserIdentity.UserNameTokenInfo.UserName = user
 ReadArguments3.EndpointDescriptor.UserIdentity.UserNameTokenInfo.Password = passw
 ReadArguments3.NodeDescriptor.NodeId.expandedText = "ns=2;i=5386" 'number of cutting

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