Browsing the DeltaV OPC server fails - "Object is not connected to server" -...
We are using QuickOPC.Net version 2018.2. We have a problem when trying to browse the DeltaV OPC server (opcda.OPC.DeltaV.1). When trying to browse, we see the error: Object is not connected to server....
View ArticleCould not create certificate via proxy error with hashSize - by: Holbach
We are moving an application to Server 2016, which is using toolkit version 5.34. When we try to run the application (which is using an EasyUAClient object) we see the following when the certificate...
View ArticleUpgrade to higher product edition - by: goosvanbeek
Hello support, Is it possible to upgrade to an higher product edition? My current edition is Professional, single developer, 5 year maintenance, ending may 2023. I want to upgrade to Ultimate, single...
View ArticleSubscription mode. Catastrophic failure error -> blocked...
Hello, I receive a lot of "Catastrophic failure" errors on ItemChanged event handler. I don't know what it means and how I can handle it. Can you provide information about this error: when it is risen...
View ArticleAccess Denied on DASSIDirect - by: csm
Hi, I have been trying to subscribe to tags on an OPC Server without any success, all avenues return "Access Denied" error as per the XML attachment. I've adapted the .NET Console samples "XmlLogger"...
View ArticlePublickey of DLLs when using disabled prerequisites boxing - by: zaglerp
Hi! We want to replace some DLLs with versions we have built ourselves (e.g. OpcLabs.EasyOpc.UA.Implementations.NetSdk.res.Opc.Ua.Core.dll) After disabling prerequisite boxing, these DLLs cannot be...
View ArticlePublickey of DLLs when using disabled prerequisites boxing - by: zaglerp
Hi! We want to replace some DLLs with versions we have built ourselves (e.g. OpcLabs.EasyOpc.UA.Implementations.NetSdk.res.Opc.Ua.Core.dll) After disabling prerequisite boxing, these DLLs cannot be...
View ArticleAccess Denied on DASSIDirect - by: csm
Hi, I have been trying to subscribe to tags on an OPC Server without any success, all avenues return "Access Denied" error as per the XML attachment. I've adapted the .NET Console samples "XmlLogger"...
View ArticleBrowseNodes zero items but demo application shows all items - by: ToSi
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Browsing Nodes results in zero items - by: ToSi
Dear OPC Labs Team, I am currently developing a service where one part is to browse the whole structure of an OPC-Server. Right now, I am using a CodeSys Testserver. Your Demo Application (OPC-DA) can...
View ArticleEasyDaClient - WCF - The type initializer threw an exception - by: Math
Hi, I dont have any issue using the EasyDaClient with a Winform. When I use the EasyDaClient within a WCF service I get this error: The type initializer for 'OpcLabs.EasyOpc.DataAccess.EasyDAClient'...
View ArticleSessioneTimeout doesn't work? - by: Grizzo
Hi, we use READMULTIPLE generalli (cannot use SUBSCRIBE) and need to have a maximum response time of 30 seconds. Sometimes, probably due to OPCServer not responding, the READMULTIPLE call remains...
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The OPC-UA engine failed to connect to the underlying subsystems. - by: chrhardt
Hello, I'm relatively new to OPC UA. I tried the OPC UA demo for Delphi (EasyOpcUADemo) with Delphi XE8. (using the latest version QuickOPC 2020.1) When I try to connect to an OPC UA server I get the...
View ArticleSubscribe for Alarms and sort by date and time - by: chris.debono
I am developing an application which subscribes for alarms. The alarms are retrieved sorted by the Event.Message, is there a way to sort these alarm by date and time please?
View ArticleWriting to tag failed with error code 0xC0048005 - by: nrsouman
Hi, I'm getting an exception "0xC0048005 + The client method called was 'WriteMultipleItemValues'" when attempting to write to a tag using EasyDAClient.WriteItemValue. The code looks like this:...
View ArticleTesting Demo version with Xojo - by: Sacha
I am testing the OPC client with Xojo through COM. Everything works fine but I can't read the ID Tag collection because the method GetEnumerator gives me NIL. The other methods like Count returns...
View ArticleVS 2019 hangs when adding UA .net controls and running debug mode - by: Restrepo
Hello Z, I am currently working with a customer that is experiencing a VS 2019 hang whenever he adds the easyUAClient .net control to his form and he tries to run in debug mode. The strange thing is...
View ArticleEmbed library into Cs project - by: Šilhavý
Hi I wrote very simple program to grab data from a file and send them on UA server. I am using BaseLib an EasyOpcUA libraries, VS2017Comm, Win10, framework 4.8. When i compile the project and dlls are...
View ArticleMulti Column ListView - by: neilcooley
Hi I have a UDT comprising, Mould ID Next Action Date_1 Date_2 Date_3 Do you have a example showing how you would display each UDT tag as a row in a list view. ie. the UDT members are the fields. I am...
View ArticleCan QuickOPC-UA be used to retrieved historical data using the HA...
We require data access and historical data access for our tools. I haven't seen any documentation on your website refering to HA. Please confirm whether we can use QuickOPC-UA for HA? If not, are there...
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