Unclear subscription problem - by: yp
Hi, I'm evaluating the QuickOPCUA .NET solution but I'm struggling with the subscription part. I've created a subscription like this: //Node 'A.B.C" has value string nodeid = new UANodeId(2, "A.B.C");...
View ArticleConfigurate Opc Ua CLient - by: alr1976
Hi! I have opc ua server in VPN and connection is very slow. I need to change opc ua client parameters(session,discovery). I found in Delphi only Isolated parameters. Where can I found connection...
View Article2nd SubscribeDataChange calls freeze - by: phil56
Hi, I'm evaluating the QuickOPCUA .NET solution (2017.2) I'm testing the subscription part. My code : The first SubscribeDataChange works well, but if I add a second one, the program freezes on the 2nd...
View ArticleExcel Option - by: rotem
Hi, after installation i get "An OPC-DA RTD Server license is not granted. Obtain and install proper license to resolve this error." Office 2016 with Ultimate license. Thanks
View ArticleSeemingly random COMException - by: jgreg311
I've been battling with DCOM configuration and permissions, and I thought I had it all figured out, but I'm still getting (what seems to be random) COMExceptions when reading an item's value (via...
View ArticleDynamic Tags - How to create them? - by: forum-dv
Hello! Can you help me out? I am trying to dynamically create tags for Siemens S7-300. My OPC server is Kepware v6 (Siemens Suite) For example: to read QB0 How do I do that? Regards
View ArticleUnsubscribe Multiple Items in Web Page - by: jmolina
Hi, I'm using Quick OPC 2017.1 in a ASP.NET MVC Application with c#. The reads are made it by a subscription group to an OPC Server Matrikon OPC Simulation, this is the code. When the subscription is...
View ArticleForm crashes when open de .cs of the form in VS - by: IsmaelGalaviz1995
I have tried this with in an empty project/solution to be sure if there is no conflict with my original project, so I built a new solution and added the EasyDAClient, so, the component is added without...
View ArticleGUI popups when using QuickOPC - by: chrisstankevitz
Hi, I built an example c# .NET console application by referencing these dependencies: When I established a connection to a server, QuickOPC "popped up" a GUI window asking the user to confirm the...
View ArticleSubscription call blocks for long time - by: support
"I subscribe 15 Tags with my slow connection and it take time.... so if user close Forms it need to wait that subscribe read data..... It seem that is not possible cancel subscribe.... for example...
View ArticleBadTypeMismatch - by: Dq-soft
Hello again, i have a little problem: i often get BadTypeMismatch during Writemultipevalues but only with Integer and real values. String is working well. i use Delphi XE6 and Twincat3 with 6100 OPCUA...
View ArticleForce MonitoredItem to Read/Update on demand (Should be Easy) - by: dataman1
I currently add items to the EasyUAClient by using SubscribeMultipleMonitoredItems(). Everything works fine except I would like to periodically do a refresh on all of the values. I have tried doing a...
View Article{Kepware.ClientAce.OpcDaClient.DaServerMgt} - by: adisd
Hello, I am struggling with 'unspecified error', E_FAIL when I try to connect to OPC Server from the client code running in VisualStudio 2017. Entire session is running on single machine. unspecified...
View ArticleConnections lost with Subscriptions - by: Wagner
Hi there, we have got an issue regarding subscriptions. We subscribe several things and get after some minutes the atattached messages. The OPC UA server is a S7 OPC UA server. If we test the same...
View Articlelicx file preventing build, and Form Design issue with assembly references -...
I still cant run my C# app until I delete the .licx file. By deleting the references to OpcNetApi, OpcNetApi.Com and OpcNetApi.Xml I can then access the Form Design tap in VB. Every time I start a new...
View ArticleUA parameters corresponding to DA parameters - by: I-Tecnology
Hi, are there any general parameters to set with OPC UA? With OPC DA I used this parameters: With OPC UA I didn't find them.
View ArticleVBA Examples in Excel - by: gkalipershad
I was hoping you could shine some light on this situation. A customer reached out to me with the following: “Running evaluation of OPC Data Client 2017.2 on WIndows 10. .NET Framework > 4.7. I was...
View Article"An invalid handle was specified" after app. 25 sec. - by: Renoo
Hello, I'm trying to get an EasyUAClient running in a .NET environment. The program works fine, but every time when I import the OpcLabs.EasyOpc.UA library the program crashes after app. 25 seconds...
View ArticleReadMultiplevalues never comes back - by: Dq-soft
Hello, I use Version 2017-2 with Delphi XE6 and Twincat 3.1 OPCUA Server Sometimes when i switch Twincat to config mode ReadMultipleValues never comes back. Normale i get an Error with every node i try...
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