System.MissingMethodException in OPC-UA - by: CFrayneIonic
Hello, I'm modifying a program that uses QuickOPC. Every time I run the code, a System.MissingMethodException is thrown(pasted below). The code is supposed to subscribe to multiple Nodes. I'm currently...
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Read an Array of structure - by: Twoaster
Hi! I have an array of 200 positions, with a structure inside each position containing integer, strings and booleans. I'm using a schneider PLC with an OPC server on it. I want to map this array on my...
View ArticleBadNotConnected when trying to subscribe/write - by: CFrayneIonic
Hello, The project is meant to subscribe to and write to nodes, However, Subscribing throws "OpcLabs.EasyOpc.UA.UAEngineBase Error: 0 : UAClientSubscription failed at tick 665125343 and will retry in...
View ArticleAlarm And Event Subscription - by: Jannie@Moore
Hi there i need to be able to access Area, CategoryName and Code on the below alarm event.public void client_Notification(object sender, EasyAENotificationEventArgs e) { try { var AE_subscription =...
View ArticleTag Subscription - by: Jannie@Moore
Hi, what is the maximum number of tags, can i subscribe to with OPC UA,DA and number of even on AE?
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Certificate "CN=" not found in certificate store of store type 'Directory' -...
Hello, I'm having an issue with certificates where none of my generated certificates are being recognized? Below is the exceptions I get when I attempt to Write, Read and Subscribe. What's confusing me...
View ArticleIssue with QuickOPC and Microfost.Office.Interop in WinForms - by: laritello
Hi everyone! My issue is that Excel crashes the application when used with OPC client. Installed: Windows Server 2012 Microsoft Office 2010 Professional (32-bit version) Kepware ServerEX 6 Application...
View ArticleReading/writing - by: spaxman
I am using the OpcLabs.EasyOpc.UA.EasyUAClient with these read parameters opc_struc.item_list[ll_idx] = CREATE OLEObject...
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Certificate "CN=" not found in certificate store of store type 'Directory' -...
Hello, I'm having an issue with certificates where none of my generated certificates are being recognized? Below is the exceptions I get when I attempt to Write, Read and Subscribe. What's confusing me...
View ArticleThe 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 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?
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HResult: -2147024894 (0x80070002)Could not load file or assembly...
We are working with a customer who recently upgraded to OPC Data Client 2024.1 on a development machine and is testing building a new project in Visual Studio 2022 (17.8.5). They created a Windows Form...
View ArticleOPC UA - relevant parameters - by: Euzébio
Hi, Is there a code example of an OPC UA client in C# that allows me to customize the following features? No security mechanisms Secure Channel with no use of certificate Secure Channel with local CA...
View ArticleCatching Exceptions with Read Multiple or Multiple -Operation Methods - by:...
Hello Team, I have been working with a customer who is using ReadMultiple and would like to have a catch for when the OPC Server goes down. On the docs it mentions that you should not put try/catch...
View ArticleNotification for server disconnect or unstable connection - by: Twoaster
Hi! I'm creating a program that subscribe to a list of monitored items and updates a user interface with those values on change. On my subscription, I already have an event that checks for changes on...
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.
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