Professional OPC
Development Tools

logos

lupa

Online Forums

Technical support is provided through Support Forums below. Anybody can view them; you need to Register/Login to our site (see links in upper right corner) in order to Post questions. You do not have to be a licensed user of our product.

Please read Rules for forum posts before reporting your issue or asking a question. OPC Labs team is actively monitoring the forums, and replies as soon as possible. Various technical information can also be found in our Knowledge Base. For your convenience, we have also assembled a Frequently Asked Questions page.

Do not use the Contact page for technical issues.

  1. Forum
  3. Discussions
  5. QuickOPC-Classic in .NET
  7. Reading, Writing, Subscriptions, Property Access
  9. ArgumentException when reading OPC items

ArgumentException when reading OPC items

More
13 Feb 2020 13:21 #8223 by support
Replied by support on topic ArgumentException when reading OPC items
Hello,
this may be a QuickOPC bug. Thank you for reporting it. I have reviewed the code and found a possible missing synchronization.

The fix is in build 5.56.1073.1 or later. Please download the current version and rebuild with it.

Regards

Please Log in or Create an account to join the conversation.

More
12 Feb 2020 11:31 #8220 by Andriy
ArgumentException when reading OPC items was created by Andriy
Hello,

I get ArgumentException when reading OPC items. Do you know what that can be?
build 5.56.1055.1
System.ArgumentException: Item has already been added. Key in dictionary: 'OpcLabs.EasyOpc.DataAccess.Implementation.ExceptionEnhancingEasyDAClient.Processed'  Key being added: 'OpcLabs.EasyOpc.DataAccess.Implementation.ExceptionEnhancingEasyDAClient.Processed'
   at System.Collections.ListDictionaryInternal.Add(Object key, Object value)
   at OpcLabs.EasyOpc.DataAccess.Implementation.ExceptionEnhancingEasyDAClient.ProcessError(Exception exception, Func`2 getDataItemFunction, String methodName)
   at OpcLabs.EasyOpc.DataAccess.Implementation.ExceptionProcessingEasyDAClient.Process(OperationResult[] operationResultArray, Func`3 getElementDataItemFunction, String methodName)
   at OpcLabs.EasyOpc.DataAccess.Implementation.ExceptionProcessingEasyDAClient.ReadMultipleItems(DAReadItemArguments[] argumentsArray)
   at OpcLabs.EasyOpc.DataAccess.EasyDAClient.ReadMultipleItems(DAReadItemArguments[] argumentsArray)

Please Log in or Create an account to join the conversation.

Moderators: support
  1. Forum
  3. Discussions
  5. QuickOPC-Classic in .NET
  7. Reading, Writing, Subscriptions, Property Access
  9. ArgumentException when reading OPC items
Time to create page: 0.044 seconds