OpcDa items - by: Sacha
I can read data from path OPCLabs.KitServer.2 but not from opcda:OPCLabs.KitServer.2. Why ? Regards Sacha
View ArticleIs "LocalizedText" a valid OPC UA data type? - by: micham
Hi, Is "LocalizedText" a valid OPC UA data type? Thank you. Michael
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Create certificate for OPC UA Client - by: aksenthil
Dear Team, I am using OPC UA client 2021.1 ( 5.60.107) On the remote machine, I had Kepware UA Server. when I try to connect from My Desktop, I am getting the error 'remote server not responding." The...
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Create certificate for OPC UA Client - by: aksenthil
Dear Team, I am using OPC UA client 2021.1 ( 5.60.107) On the remote machine, I had Kepware UA Server. when I try to connect from My Desktop, I am getting the error 'remote server not responding." The...
View ArticleSubscription - by: alr1976
Hi! I have some difficult to subscribe alarm and event with Kepware 6 in delphi. I have created 1 event but it seem that i can't subscribe it. const UAObjectIds_Server =...
View ArticleSubscribeMultipleItems sometimes blocks indefinitely - by: spicerno
Hi, we're using version 5.54.1151.1 / 2018.3 of EasyOpcClassic to acquire a thousand values from an OPCDA server using mostly subscriptions. Everything works properly for some days, but then for no...
View Articlereading data from siemens OPC-UA server - by: hj.weyrich@jopp.com
Hello, i'm testing the functions of the EASYUA-client and do not know how to set the parameters. Can someone tell me the correct parameters in EASYUA-Client to get the data of a Siemens OPC-UA server....
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ConditionRefresh - by: AdiROC
Hello I am programming a .NET Framework OPC UA Alarms & Conditions Client. So far so good. The problem I am facing is that I need to provide a refresh functionality. For that purpose I use the...
View ArticleObject reference not set to an instance of an object - by: AdiROC
Hello I use an Alarms and Conditions Client. When I initialize an Eventsubscription, I subscribe to a custom node on the server(TEXT06): Depending on the event the node can also be empty. If the node...
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Subscribe to events - by: mozesa
Dear OPCLabs, I would like to ask for your kind help. This snippet works fine, I got the events right. There is a Python project in which I have to use another OPCUA implementation (FreeOPCUA) - the...
View ArticleLicense - by: AdiROC
Hello, Im using QuickOPC for a Alarms & Conditions Client, but Im not sure which license to buy. Here are all references I used: using OpcLabs.EasyOpc.UA; using OpcLabs.EasyOpc.UA.AddressSpace;...
View ArticleOPCLabs version 5.35: BrowseServers() does not throw exception - by:...
Hello Support, Since 2015 we are using QuickOPC5.35 with WCF based C# tool to browse and configure OPC DA server. Recently we have received a complained about our customer that application does not...
View ArticleConnection best practice - by: DarrenYoung
I've not been able to find anything in the documentation regarding this. What is the best practice for creating EasyOPC clients? Should we create one, in a using block, each time we want to perform a...
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Error: Access is denied. + The client methods called (or event/callback...
Hi, I have a customer who is getting an error when trying to connect with a remote OPC DA server (Unicorn DA Server). Access is denied. + The client methods called (or event/callback invoked) Other...
View ArticleReading/Writing Files exposed by OPC_UA Server - by: cadomanis
Looking for assistance is reading and writing File ObjectTypes from our Beckhoff OPC Server. The following is a snippet from the server documentation that explains the functionality that has been...
View Articleread Connectionstate - by: AdiROC
Hello In my Client Application, I need to know if the client is connected at the moment or not. To achieve this, I wrote this code: Is there a better way to do this? Thanks in advance!
View ArticleConnection problem with delphi - by: alr1976
Hi! i have installed 2019.2 version and 2021.1 version but i have this message error "opc.tcp://172.16.4.200:49320" Disconnected(10000); *** Failure OpcLabs.UAEngine=1: UA SDK error...
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connection failure in dot net core error : 0x808A0000 - by: aksenthil
Dear Team, I was trying to access OPC UA Server ( Kepware server) in windows machine. My Quick OPC OPC UA client is running in ubuntu 20.04.2 LTS I am using the dot net core sample application from...
View ArticleException thrown: 'OpcLabs.EasyOpc.UA.OperationModel.UAException' in...
Dear opc labs admin, I am working on an application I build several years ago, with QuickOPC 2016.2 al written in C#. The application was running fine during debugging in Visual Studio. I wanted to...
View ArticleException thrown: 'OpcLabs.EasyOpc.UA.OperationModel.UAException' in...
Dear opc labs admin, I am working on an application I build several years ago, with QuickOPC 2016.2 al written in C#. The application was running fine during debugging in Visual Studio. I wanted to...
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