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vb6 connection parameters

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09 Aug 2021 07:25 #10099 by support
Replied by support on topic vb6 connection parameters
Hello.

The simple "ReadValue" method cannot do that.

You need to use the ReadMultipleValues method instead, because it gets passed an "endpoint descriptor" which can in turn contains the user name and password. You can use ReadMultipleValues for reading just one value, too.

An example of using the ReadMultipleValues: opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...0Read%20multiple%20values.html .

In the endpoint descriptor, the code to set the user name and password will look similar to this:
EndpointDescriptor.UserIdentity.UserNameTokenInfo.UserName = "appadmin"
EndpointDescriptor.UserIdentity.UserNameTokenInfo.Password = "demo"
Best regards

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06 Aug 2021 07:24 #10097 by ulix86
vb6 connection parameters was created by ulix86
Hi,
I have a problem with connecting to the OPCUA SERVER and VB6.
I installed QuickOPC 2019.2 for compatibility with windows7 so.

I found Vb6 code in Documentations and Helps for read a node value and display it
but I didn't find how to specified username and password and type of autentication.

This how I read the node:

' Read node value and display it
Me.Text1 = Client.ReadValue("opc.tcp://172.16.108.35:4840", "ns=2;i=4179")


but return a runtime error BadUserAccessDenied.
I think i should specify username and password and type of connection, right?

Is there documentations about this type of connection in vb6?

thank you (and sorry for my english ;) )

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  1. Forum
  3. Discussions
  5. QuickOPC-UA in COM
  7. Connection, Reconnections, Certificates
  9. vb6 connection parameters
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