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License error - by: micham
Hi, I have installed the latest version of Quick OPC (Setup-OPCLabs-OpcStudio-2024.1-Windows-Full). When I start my program I am getting an error: My license is:...
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After I get the license error, my form style/colors are changed - by: micham
Hi, After I get the license error, my form style/colors are changed. See below. See below. License error: Thank you. Michael
View ArticleAre these DLLS not required any more? - by: micham
Hi, Are these DLLs not required any more? I am Quick OPC Version 2024.1. OpcLabs.OpcComplexEventProcessing.dll OpcLabs.OpcUANodeset.dll Thank you. Michael
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Exception when running our release program - by: micham
Hi, We are using version 2024.1. When I run my program in Debug mode, it runs fine. When running the release program, I get an exception. See Below. Any idea what is causing this exception? Exception...
View ArticleHow can I use "WaitForItemValue" in a correct way? - by: mut9bu
Hello I am subscribing to multiple values with following code. As you have also mentioned in your documentation, The first values of the items, after subscription started, come sometimes with quality...
View ArticleThreading/Periodic Worker Processes - by: KPersyn33
A customer has reached out to our team because they were able to identify an issue with their project that contains OPC Data Client. Unfortunately, this is not something that they are able to record or...
View ArticleThreading/Periodic Worker Processes - by: KPersyn33
A customer has reached out to our team because they were able to identify an issue with their project that contains OPC Data Client. Unfortunately, this is not something that they are able to record or...
View ArticleQuickOPC VBScript ASP example script not working - by: Kyle.Oshima@caltrol.com
Am prototyping QuickOPC as possible OPC DA interface for web HMI component for industrial DCS. HMI machine is running Windows Server 2022 Standard and Internet Information Services 10. Have installed...
View ArticleVisual Studio 2022 Won't run demo examples - by: wpawlowicz
Trying to create a simple VB program to read and write OPC tags from a Kepware server.I have installed the latest Visual Studio, Version 17.9.3 from scratch, .NET 8.0. I downloaded and installed OPC...
View ArticleCannot browse particular ObjectFolder - by: asenti
Hi All, I have been using the recursive browse example provided here (C#): www.opclabs.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/Us...wse%20nodes%20recursively.html Although we have one...
View ArticleVisual Studio 2022 Won't run demo examples - by: wpawlowicz
Trying to create a simple VB program to read and write OPC tags from a Kepware server.I have installed the latest Visual Studio, Version 17.9.3 from scratch, .NET 8.0. I downloaded and installed OPC...
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Unable to read Array with KEPServer EX 6 and AB Logix - by: glwalsh
Hello, I'm unable to read an array of bool using ReadItemValue. I can read one value of the array at the time but can't read the full array. According to the documentation it is supposed to work... Is...
View ArticleCannot browse particular ObjectFolder - by: asenti
Hi All, I have been using the recursive browse example provided here (C#): www.opclabs.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/Us...wse%20nodes%20recursively.html Although we have one...
View ArticleDeadlock involving UAClientEngineBase.Reconnector - by: sd
I have one particular customer where our OPC UA client consistenly runs into a deadlock. I've disabled all our calls to the OPC library, apart from setting up a connection. I've repeated the deadlock 6...
View ArticleReading OPC DA Items Cyclic - by: mut9bu
Hello I can connect to the remote OPC server and read multiple tags with the following code, without problem. But I want to read the items periodicaly. If I run the code periodicaly, i think i will...
View ArticleReadMultipleItems in OPC DA Client while OPC DA Server reboots - by: Marrgo
In a situation where data is being read every second from the OPC DA Server using the ReadMultipleItems function, If the OPC DA Server is shut down for a certain period of time (for example, about a...
View ArticleDeadlock involving UAClientEngineBase.Reconnector - by: sd
I have one particular customer where our OPC UA client consistenly runs into a deadlock. I've disabled all our calls to the OPC library, apart from setting up a connection. I've repeated the deadlock 6...
View ArticleManaging shared connection to the OPC-DA Server - by: Andriy
Hello, In my application, multiple instances of the EasyDAClient class are created, each potentially can communicate with the same OPC-DA Server. In this scenario, the connection to the OPC-DA Server...
View ArticleOPC UA Client use server certificate in Ubuntu Docker container - by: clyeo
Hi, I have the following environment 1) OPC UA server requires OPC UA client to provide certificate during connection 2) OPC UA Client is a dotnet core container hosted in ubuntu May I know how to...
View ArticleIT Security: Vulnerability Reporting - by: BurkhardSchaefer
How do you publish security vulnerabilities found in your products? Can you ensure to publish known vulnerabilities within a certain time?
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