Could not create a certificate via a proxy - by: NAX
Hi, We have a OPC service, which is using your EasyOPC library for .NET Framework 4.5.2 (OPCLabs 5.53.405.1). The software is being installed on multiple machines, however some times, it doesn't create...
View Article"Class not registered" error when moving to new server - by: tlaford
I am in the process of moving from Windows Server 2008 R2 Standard / Service Pack 1 to Windows Server 2019 Standard. QuickOPC-Classic 5.20 is running just fine on the old server. The mahlo 10A OPC...
View ArticleRefresh event behaviour different if another OPC-UA software is monitoring...
Hello, I've noticed a strange behaviour inside a client software I've developed, so I took a step back and made some test with a simple client console application (NET. Core on windows) The code is the...
View ArticleRPC Server Unavailable in simple DA client - by: janderscu
Hi, I am using QuickOPC 2020.2 Build 451.1 in a simple C# client that is subscribing to a DA server and monitoring data changes using the EasyDAItemChangedEventHandler. This client has been working...
View ArticleReadItemValue Error - by: PythonByte
Guys, My app has a server (SLIKDA) and a client QuickOPC 5.59. I see my tag registers fine and I get a handle, when I try to read the value I just registered using the following line: Tag.Value =...
View ArticleIntegration of EasyOpc to AWS lambda - by: tangelo
Hi, I'm not sure I can register license in AWS lambda due to "Read-only file system" error. Is it possible to register license in another way? Looks like this one is not working for me:...
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Browsing a tree leaf with 20,000 items fails with Exception (timeout) - by:...
When browsing a tree leaf with 20,000 OPC items, I get an error: Timeout browsing nodes. + The client method called was 'BrowseNodes'. When I try the same with Matrikon OPC Explorer, I can browse and...
View ArticleLicense not recognized in net core application - by: goosvanbeek
Hi support, I created a Net5.0 application using the latest OpcLabs Nuget libraries. Although I have a valid license (according to the license manager), my application doesn't recognize the license. I...
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OPC UA Browsing - selecting a folder - by: micham
Hi, I have the following problem. While browsing OPC UA items, if I select a folder (not a node), then that folder name is added to my items list with a nodeId. This is an invalid node and cannot be...
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array fields - by: Opclabs9999
Hi, scalar type can be imported in Excel while vectors cannot ( instead of the values I can only see a Systen.Single[] label ) Is there a way to obtain all values inside the vector ? Example image...
View ArticleError Version 2020.3 - by: Werner.Gall@gapo.de
es gibt ein Problem in der Version 2020.3 das in den Versionen davor nicht vorhanden ist. Das lesen einer bestimmten komplexen Struktur aus einer S71500 geht nicht mehr. Der Aufbau der Struktur...
View ArticleMappingTag - by: RoadRunner2019
Hello OpcLabs team, Since we have access to different modes (nodes) for machine control, I was looking for a way to activate them dynamically using the live mapping concept. I came across the attribute...
View ArticleEasyDAClient.ReadItem not returning - by: DarrenYoung
Hi, We're using version 5.58.151.1 and are experiencing a intermittent, but daily, issue. We're reading the same tag multiple times throughout the day. Often, the call to EasyDAClient.ReadItem does not...
View ArticleEasyUAClient.Read o ReadValue returns null instead Subscription returns a...
Hi, we have a very simple UA client (like example demo code) that must read tag values from an opcserver. Even when using demo application provided with QuickOpc installation, we're able to read values...
View ArticleBrowseBranchesWeb Timeout Exception - by: ZParham
I have a customer using OPC Data Client release 2020.3 (5.59) in VS 2019 on a Windows 10 computer. When running the BrowseBranchesWeb C# example in Chrome using the built-in test server...
View ArticleUse of EasyDaClient hangs application - by: saratalley
I have Windows version 20H2, when I tried to run a previously written application that used the EasyDaClient 2018.3 Visual Studio would randomly crash with no indication of the what the problem might...
View ArticleRockwell RSLInx OPC sever - by: Saita
I am browsing with RsiOPCAuto.OPCBrowser from rockwell the RSLinx opc server. I am doing that recursively and everything is working well a part from some kind of arrays declared and istantiated within...
View ArticleRockwell RSLInx OPC sever - by: Saita
I am using the RSIOPCAuto reference from Rockwell. I connect to the RSLinx OPC server to access to tags within Rockwell PLCs. I am using RsiOPCAuto.OPCBrowser mybrowser to moveUp and down through the...
View ArticleOpc Da in .net Core - by: radek.huber
Hello, do you have any plans to add support for the opc da into the quickOpc .net core version? Thank you, Radek Huber
View ArticleSubscription vs Read multiple items - by: Sacha
Why choose Event Subscription or Read multiple items ? CPU load ? Speed ? Regards Sacha
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