SDK version upgrade is stoping and crashing application - by: Restrepo
Hello Z, I am working with a customer that is experiencing the following behavior:...
View ArticleClik here to view.
Subscription to events - by: federica
Hi, I'm using your SDK (QuickOPC 2018.1, in particular OPC-UA under COM with C++) since last year. Now I need to integrate my application with an OPC-UA server who is generating events that I must...
View ArticleInstallation with LicensingException - by: SolutionNow
We have purchased a license and installed in numerous PCs without problem, until a couple of days ago when a colleague attempted to install the license on two different PCs but he encountered the same...
View ArticleOPC XML-DA. Communication problem - by: Andriy
Hi, I can't communicate with OPC XML server. Can you help? I receive next error: OpcLabs.EasyOpcClassic E_FAIL Client found response content type of 'text/html; charset=utf-8', but expected 'text/xml'....
View ArticleKeep-Alive and inactive subscriptions - by: sjscheider
In our system, we have 3 subscriptions. The data on 1 of the subscriptions changes relatively often, at least every 5 minutes per device. (Typically it is every few seconds, but we've seen instances of...
View ArticleUnable to connect to Bihler machine using X509 certificate: strange error. -...
Hello, I am unable to connect to a Bihler CNC machine using X509 pfx certificate. As you can see in log file attached, the error is: The OPC-UA client session with connect sequence number 1 failed to...
View ArticleSlow Update To Listview (Large Amount Of Tags) - by: neilcooley
Hi I am wondering if you could tell me how to improve my code so I can read over 1000 elements into a listview in real time. The OP Server is Rockwell FactoryTalk Gateway. I then repeat this in a for...
View Articlegetting null (was: OPC UA Syntax for Simatic.NET UA server) - by: Giuseppe12
I've to read data from Siemens Panel TP 900 Comfort with OPC UA. I've set UAEndpointDescriptor endpointDescriptor = "opc.tcp://192.168.107.12:4870"; After I've set var mapper = new UAClientMapper();...
View ArticleUnion Complex Data Type - by: kriskazmar
Will QuickOPC-UA .NET be able to decode the data for the following array of structures, where the structure contains a union complex data type? The OPC UA server address space will define the Event,...
View ArticleException in SDK action...
During evaluation of QuickOPC I always get this error. Something seems to be wrong with my certificate store or maybe it is because the computer is Azure-AD-joined. I already tried deleting all stored...
View ArticleError in Live Binding when closing WPF Application - by: treams-gmbh
Hi, I have implement a live binding in a WPF Application. The binding is working well but when I close the application i got the following error message: (QickOPC 2018.3) System.ArgumentException:...
View ArticleI can write to an OPC server but not read - by: mikeboiko
Hi, I'm not able to perform read/write operations to a Yokogawa ExaOPC. I downloaded the latest QuickOPC library (2019.1) for this test. Then, I opened EasyOpcNetDemo.exe to perform a test on...
View ArticleUsing PicoOPC in VB.NET project with Visual Studio 2010 - by: tangoristo
Hi, i want to use the PicoOPC library in my VB.NET project. I am using Visual Studio 2010. I've Installed Nuget and i've tried to install PicoOPC packet. I've received some errors with...
View ArticleMemory gets full while writing the OPC Variables in the OPC Server - by: Moien
Dear all, I have an OPC UA Client application in Delphi 10.2. Via my application I connect to the OPC Server and try to write variables continuously into the OPC Server. I can successfully connect to...
View ArticleSecond very slow variable subscription - by: phil56
Hi ! We work with librairies Quick OPC-UA 2018.3. When we start the program, we subscribe to 2724 variables in 14 seconds : PlcClient : subscribe event PlcClient : open PlcClient : subscribe data...
View ArticleEasyUAClient.SubscribeDataChange() behaviour - by: Giuseppe12
testing EasyUAClient.SubscribeDataChange() with dataChangeCallback, the event raise also on startup program where the subscribed variable on PLC (and C#) is a boolean type. Is there a way to filter the...
View ArticleHow to get the status of TEeasyUAClient.WriteValue - by: Moien
Hi all, Is there any property of TEeasyUAClient to get the status of TEeasyUAClient.WriteValue (endpointDescriptorString, nodeDescriptorString, Value) to see if the "WriteValue" procedure has done...
View ArticleHow to get the status of TEeasyUAClient.WriteValue - by: Moien
Hi all, Is there any property of TEeasyUAClient to get the status of TEeasyUAClient.WriteValue (endpointDescriptorString, nodeDescriptorString, Value) as a Boolean output to see if the "WriteValue"...
View ArticlePerformance Differences on Windows & Linux - by: sjscheider
We have been experimenting running our .NET Core app on both Windows 10 and Linux (Ubuntu 16.04) and are seeing some interest results that we are hoping you can validate, explain and provide some...
View ArticlePlatformNotSupportedException: Operation is not supported on this platform -...
Good day, I am getting the following Exception when I try to create a new EasyDAClient object. Please can you assist me? System.TypeInitializationException HResult=0x80131534 Message=The type...
View Article