QuickOPC winForms for .netCore - by: radek.huber
Hello, Since winforms are now supported by the .net Core , do you plan to build QuickOpc winform libraries for .net Core version? Thanks you, Radek Huber
View ArticleAn OPC operation failure with error code 0x800401F3 - by: Ronald B. Livesay
This is the culprit: object x = _client.ReadItemValue( _Machine, _Server, _Tag ); where private readonly EasyDAClient _client = new EasyDAClient(); using OpcLabs.EasyOpc.DataAccess; Windows 10, Visual...
View ArticleManaged Resource License Store Not Working As Expected - by: bobkaine
See attachments. I have created a simple Windows Form Application. The license is not recognized. I have tried with the license installed via License Manager and uninstalled.
View ArticleSubscription mode. Catastrophic failure error - by: Andriy
Hello, I receive a lot of "Catastrophic failure" errors on ItemChanged event handler. I don't know what it means and how I can handle it. Can you provide information about this error: when it is risen...
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Trusting certificate with AcceptAnyCertificate - by: SolutionNow
Hello, We have a program that uses your library that is launched by windows service. Being launched by a background service, the program also stays in the background. This creates a problem when at...
View ArticleMemory leak issue cause by OpcLabs.QuickOpc - by: KrisSik
Hi, I got a memory leak issue and the problem I think could be caused by the OpcLabs library, because a huge part of the memory used by the application is allocated by the unmanaged resources. The...
View ArticleFailover mechanism - by: radek.huber
Hello, Is there build in failover mechanism in the QuickOpc? Our program need to connect to the backup server in case the main server is not accessible. Thanks you, Radek Huber
View Article"SubscribeDataChange" using the read function - by: Moien
Dear all, I am reading more than 300 different variables with different node IDs from the OPC UA Server. My application is runing 24/7 and I am getting always new variables on the OPC UA Server. I used...
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how can i read a variable from type DTL in my program to C# - by: alozano
Hi, now I am using this method to read a variable of type DTL and I will like it simplify the code, anyone can help me?
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how can i read a variable from type DTL in my program to C# - by: alozano
Hi, Now I am using this method to read a variable of type DTL and I will like it simplify the code, anyone can help me?
View Article"SubscribeDataChange" using the read function - by: Moien
Dear all, I am reading more than 300 different variables with different node IDs from the OPC UA Server. My application is runing 24/7 and I am getting always new variables on the OPC UA Server. I used...
View ArticleLIve Binding WPF component - TargetParameterCountException - by: Restrepo
Hello, I am currently trying to write us a sample application to help one of my customers writing a WPF Application using OPC Data Client's live binding component. Unfortunately, I am not able to...
View ArticleSubscription mode. Catastrophic failure error - by: Andriy
Hello, I receive a lot of "Catastrophic failure" errors on ItemChanged event handler. I don't know what it means and how I can handle it. Can you provide information about this error: when it is risen...
View ArticleUASecurityPolicyUriStrings class in DELPHI - by: jkahlert
Hi, I'm programming QuickOPC in DELPHI and found the following description in your user's manual: "The UAEndpointSelectionPolicy.SecurityPolicyUriString property, when not an empty string (empty string...
View ArticleReadMultipleValues exception - by: Boris
Hello! I'm using Delphi XE8. I tried to upgrade from version 2018.3 (5.54.1281.1) to version 2019.2 (5.56.475.1). Immediately after the update, a critical error occurred while executing the...
View ArticleOutOfMemoryException in PullMultipleDataChangeNotifications results - by: Boris
Hello. Our program has been working steadily for more than a year. All this time we used the components of version 2018.3 (5.54.1281.1). Users use the program with different OPC-UA servers. And...
View ArticleReadMultipleValues exception - by: Boris
Hello! I'm using Delphi XE8. I tried to upgrade from version 2018.3 (5.54.1281.1) to version 2019.2 (5.56.475.1). Immediately after the update, a critical error occurred while executing the...
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Opc.Ua.Bindings.TcpAsyncOperation.OnTimeout(System.Object) - by: Sleepless
Hi ,Support I met a big problem about OpcLabs tools ,which is about OpcUa stuff.When I use methods (Writemultiple ,ReadMultiple,or SubscribeMultipleMonitoredItems),a same problem happens.Please check...
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Opc.Ua.Bindings.TcpAsyncOperation.OnTimeout(System.Object) - by: Sleepless
Hi ,Support I met a big problem about OpcLabs tools ,which is about OpcUa stuff.When I use methods (Writemultiple ,ReadMultiple,or SubscribeMultipleMonitoredItems),a same problem happens.Please check...
View ArticleRead problem - by: Boris
Hello. There is a server in public access, here are its parameters: EndpointUrl: opc.tcp://opc.owencloud.ru:4843 UserName: This email address is being protected from spambots. You need JavaScript...
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