The client appears to have stopped running - by: xpycy001
Hi,support : I have encountered the following problem, please provide some suggestions for handling it [A] Problem description 1 The OPC UA client appears to have stopped working, the application CPU...
View ArticleMemory Leak in QuickOpc Library 5.72.1044 - by: Andriy
Hello, .Net Core 6 We have encountered a memory leak after updating QuickOpc library to version 5.72.1044. The memory usage continually increases, ultimately causing the application to crash....
View ArticleStack Problem - 0x80080000 in 'Session.Read' - by: m.spinsanti@swoa.it
Hello! For about a month the ReadMultiple method of an OPC-UA connection returns the error below: URI=opc.tcp://192.168.0.80:4840;NODEID=ns=3;s=NC/ProductionMonitor/PRDD2;*** Failure: UA SDK error...
View ArticleMinimum SamplingInterval - by: Enrico
We are trying to identify what is technically the minimal sampling interval on the client side. In the QuickOPC documentation we found the following definition: Parameter -> Sampling Interval Very...
View ArticleReading already subscribed item causes troubles with State - by: KrisSik
Hi, I am communicating with OPC DA server using OpcLabs.QuickOpc 5.63.246 (.net6.0). In my application I perform subscription to the item A at startup, and in some cases I need to read the value of...
View ArticleCreate OPC DA Server using QuickOPC library in c# - by: dastan.zhalilov@erg.kz
Hi! Can we develope OPC DA Server using QuickOPC library? And waht we need to do for this? Our license is - Multipurpose, Enterprise Site license.
View ArticleCentering UADataDialog - by: ZParham
One of our customers raised an interesting question, and I was wondering if you have any insight into how best to handle this. When launching an instance of the UADataDialog, the dialog box is not...
View ArticleOpc.Ua.ServiceResultException: 'BadNotConnected' being thrown during startup...
Hello, I'm having an issue where "Exception thrown: 'Opc.Ua.ServiceResultException' in Opc.Ua.Core.dll" is being thrown 4 times while my application is starting up. My application subscribes to...
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License issue with only 1 subscribed node? - by: CFrayneIonic
Hello, My application subscribes to multiple data changes over 80 or so nodes and updates a GUI based on their data. We have a logging system for this application and I noticed that it was being filled...
View ArticleServer Connection - by: Jannie@Moore
Hi There, im trying to handle fail over for opc server connection if server is down i want to switch to the backup. but i want to handle this on the subscription. With AE , there is exception handling...
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License that have been used more then one year is now recognized as trial. -...
We have got a critical Quick OPC license issue on our quite normal working app today. We haven't done any changes on the server where the app is running, or on the application. When we try to browse...
View ArticleHow can I set LooseReferenceTypes = True when doing programmatic browsing? -...
How can I set LooseReferenceTypes = True when doing programmatic browsing? Using the dialog browsing, I using this: uaDataDialog1.LooseReferenceTypes = True Which object should I set to allow...
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Browse Citect Plant SCADA doesn't show the items under the BrowseProvider...
Hi, When browsing Citect Plant SCADA OPC UA Server, the browse component doesn't show the items under the BrowseProvider folder. See the screen captures in UA Expert and in our browse dialog. Any idea...
View ArticleWriting Boolean value results in ArgumentNullException - by: Andriy
Hello, QuickOPC library 5.63.246, .Net Core 6 Writing a boolean value results in an ArgumentNullException: Value cannot be null. (Parameter 'key') Can you assist me with this?
View ArticleCould not load ... 'System.Runtime.CompilerServices.Unsafe, Version 4.0.4.1 -...
I recently upgraded my Visual Studio 2017 project to OPC Studio 2014.1. When I open my GUI editor it says "Could not load file or assembly 'System.Runtime.CompilerServices.Unsafe, Version=4.0.4.1,...
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Powershell library problem with new version of dll? - by: makodse
Hi, I'm pretty new to quick opc and want to use it to read/write some values. I tried it a year or so ago and got my case to work. Altough, we dident move forward with it we are trying to do so now. I...
View ArticleLicence problem - by: m.spinsanti@swoa.it
Good evening, only today a customer informed us that the connection software with his OPCUA machines has not been working for about ten days. By doing an analysis, it emerged that the problem is...
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OPC foundation version with vulnerabilities - by: HelenPacheco
I was using OPCFoundation.NetStandard.Opc.Ua.Core, Version="1.4.371.96" and OpcLabs.QuickOpc Version="5.71.302on that OPC Labs version, OPC foundation could updated and was working properly, but for a...
View ArticleApp that doesn't connect to server getting certs? - by: CFrayneIonic
Hello, I have an Application, SafeBox Sentry, that only launches another App, SafeBox. SafeBox interactes with the OPC server and has it's own certs, SafeBox Sentry doesn't interact with the OPC server...
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