BadSecureChannelClosed - by: RVersteeg
Hello ! I have a simple application with two threads ! One Thread read a Value Weight from a TWINCAT 3 OPC Server ! The Second Thread "TOPCThreadChange" has a Client with one Monitored Item Weight The...
View ArticleReading in Lazarus - by: oleg.rosa@seznam.cz
I try to use QuickOPC 2018.1 in Lazarus IDE v1.8.2. The first reading ends with an error, see attachment. I proceeded as follows: Where could be a mistake? Thank you. BR Olin [File Attachment:...
View ArticleEasyDAClient prevents WinForms application from closing immediately - by:...
Hello, We use EasyDAClient in a WinForms application. When we use EasyDAClient.SubscribeItem or EasyDAClient.SubscribeMultipleItems, it takes a long time for the application to close immediately...
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Memory leak - by: federica
Hi, I have a problem related to memory resource release. I'm integrating your library inside my application. I call "CoInitializeEx(NULL, COINIT_MULTITHREADED);" when I start my CWinApp application and...
View ArticlePassing arrays and/or structs - by: bobday
Can I use EasyDAClient to Subscribe and/or Write structures and/or arrays? How?? Thanks.
View ArticleMemory increase by using WMI Service - by: RVersteeg
Hello ! In our application we use WMI Service to get the Network Adapter and Network Connect State ! if I use this code without to start the TEasyUAClient communication the Memory of the Process is...
View ArticleHow to..? - by: netcloudengineering
Hello and congratulations for the fantastic product! I was able to setup a small opc client in a couple of minutes using the windows forms and following the quick start document. However, I am having a...
View Articlesubscribing to multiple tags using xml on remote server - by: rotem
Hi, i on upgrading an 5.23 application to 2017.2, i have used the XML to build the list of tags i have tried to use your sample of xml file to read multiple tags, but in the example i havent found any...
View ArticleConnected or not Connected this is a problem..... - by: alr1976
Hi! I have problem when reconnect opc ua...... Sometimes(There is no rule) Opclab try to reconnect to opc ua Server and remain in 'Connecting' and nothing happen until I close app. In Debug there is no...
View ArticleConflicting Licensing information - by: MPick
Hi, I believe I've found conflicting licensing information on your website, on the one hand at this link www.opclabs.com/products/quickopc/platforms/net states thatIf you are using a development tool...
View ArticleCompiling with license - by: bobday
We have purchased a single license and have a developer working on code with the demo version of your software. Despite recompiling on my machine with the fully licensed code when we deploy we are...
View ArticleError in OPC DA ERROR CODE 0x80040202 - by: SENTHILKUMAR
Dear Zbynek, we executed our OPC DA subscription application in one of the machine. our application able to browse the tag names from the OPC server. but it was not able to read the values from the OPC...
View ArticleEasyUA client access issues with VS 2013 - by: Restrepo
Hello Z, I have a customer who came to us with the following request : "I have started using the Easy UA Client in VS2013 and there seems to be issues with its compatibility or something else. After I...
View ArticleWPFLiveBinding in VS17 - by: marco
Hello, while evaluating your software, i faced following Problem. At step 3 (described here) this error keeps flashing, when dropping the WPFLiveBinding on the window. [File Attachment:...
View ArticleClient UA for OPC Server Kepware in Node.js - by: I-Tecnology
Good morning, I'd like to write a project in Node.js for IoT reading data from PLC with UA interface. The question is: OPC Labs has some library client UA for Node.js? If not what propose? Best Regards
View ArticleNullReferenceException from EasyOpcUA - by: gkalipershad
Hello, I have been working with a customer experiencing an internal error while using EasyOpcUA. Please see the attached screenshot of the full error. The last part of the error states, "Object...
View ArticleQUICKopc Client application missing the values and not retaining back - by:...
Dear Z, Issue : OPC Client Application is running continuously. but at some instance, it missing the communication and its not recovering the communication back. the required details we shared below we...
View ArticleWPFLiveBinding in VS17 - by: marco
Hello, while evaluating your software, i faced following Problem. At step 3 (described here) this error keeps flashing, when dropping the WPFLiveBinding on the window. [File Attachment:...
View ArticleCreating multiple EasyDAClient objects, blocking - by: support
From: B. Sent: Monday, July 25, 2016 10:51 AM Cc: L. Subject: EasyDAClient creation Hi Zbynek, We have a some method that gets invoked multiple times, and has creation of OPC client, and then some...
View ArticlePerformance with large number of variables - by: mpp
Hi, we're having some performances issues on our application. It happens that sometimes the OPC client take very long time (even some seconds) to read a value. We have a lot of parameters (~2000) that...
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