Console Application - Subscribing To Large Number of Tags and Storing of...
Hi I am a regular user of OPC Labs for WinForms and quite regular use a list view to display the real time status of the values. I am now developing a console application and whilst i know how to...
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[opcua] Browsing nodes - by: yong
Hello. I am using opclabs quick opcua version 5.23 for C# .NET core. I need to find a way to programmatically browse like a program uaexpert node. I couldn’t find any documentation for that, do you...
View Articleresources problem - by: ulix86
Hi, I have a problem with computer resources when I run my vb6 exe (QuickOpc 2019.2). My program starts the OpenConnection function every 15 seconds for testing the status of the machine, but after few...
View Articledelta frames with UADemoPublisher - by: Ehmsen
I am trying to use your UADemoPublisher in order to verify my implementation of subscribing delta frames. I can see delta frames coming from the DynamicLayoutConnection, but not from the...
View ArticleGenerate OPC UA certificate using OpenSSL 1.1.1f - by: Tjall
My application can't use the auto-generated certificate due to only 1 year validity. I am able to generate cert's with longer validity using opc.ua.certificategenerator, but since this tool is not...
View ArticleOlder Tag Values Being Provided - Automatic Subscription Question - by: ZParham
Hello! I have a customer running 2021.3 who is running into an issue where despite using ByValueAge and having ValueAge set to 10, the server sometimes provides 2+ hour old values. We initially looked...
View Articleproblems with drag&drop tag value - by: baldassarra
hi i'm using excel page for to read a tag value from Live Point data in Connectivity Explorer. This tag has a non zero value. When i do drag & drop tag value in excel page compare zero value and...
View ArticleObject Disposed Exception -> Unhandled - by: mpp
Hi! I'm having an issue with the DA client. This is what it is register as an unhandled exception on the windows event log: I'm using the last nuget package 5.62.1032. It's weird because I'm using the...
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Authentication with X509 certificate - by: federica
Hi, I'm using QuickOPC COM, developing in C++. I need to authenticate to an OPC-UA server using certificates. In UaExpert I need to specify "Certificate" and "Private Key". How can I specify this...
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Authentication with X509 certificate - by: federica
Hi, I'm using QuickOPC COM, developing in C++. I need to authenticate to an OPC-UA server using certificates. In UaExpert I need to specify "Certificate" and "Private Key". How can I specify this...
View Articleforce refresh value - by: ulix86
Hello support, is it possible to force refresh of a value? I try to explain myself... when I read "number of cutting" value from the server (also with UAExpert) the server gives me back an old value...
View ArticleIs There a Way to Create a Permanent Certificate - by: johndoe1234
Hello! I apologize if this question is rudimentary or incorrectly formatted but I am an intern at a company working on a diagnostics software that was created about 4 years ago and has been untouched...
View ArticleError "An OPC-UA operation failure with error code -2147483648 ..." in VM -...
Hi, I have a my program with QuickOPC that working fine from one year on one Win10 PC, my customer ask my to move the program on a new Win10 Virtual Machine and on reading function I recive this error:...
View ArticleSubscriptions to more than 100 servers ,some servers do not respond . - by:...
Hi Support, Our team met a problem about OPC UA subscribtions. Scenario 1: We used one EasyUAClient to connect with more than 100 servers(one server per host). Some servers did not respond，which we...
View Articlevisual foxpro GetNamespaceTable - by: balleri
Hy, we are testing with QuickOpc and the Visual Foxpro. The example provided for reading and writing was very useful. It is possible to have examples for other functions as well, such as...
View ArticleOpcUa_SecureConnection_Disconnect: Disconnecting in state 3! - by: smbunn
I have lost contact with an iFIX OPC-UA server repeatedly and it is getting worse. I pulled up the iFIX OPC-UA logs and see this every few minutes, it repeats every 30 seconds: Any ideas?
View ArticleError "An OPC-UA operation failure with error code -2147483648 ..." in VM -...
Hi, I have a my program with QuickOPC that working fine from one year on one Win10 PC, my customer ask my to move the program on a new Win10 Virtual Machine and on reading function I recive this error:...
View ArticleGetting error registring the licence - by: RONALD.HIDALGO
Hey guys good afternoon We bought a year ago license for QuickOPC Ultimate, Single Developer + Runtime Free License, and we cannot register it with the licence , is getting error the order for purchase...
View ArticleReading OPC DA Items Cyclic - by: mut9bu
Hello I can connect to the remote OPC server and read multiple tags with the following code, without problem. But I want to read the items periodicaly. If I run the code periodicaly, i think i will...
View ArticleObject Disposed Exception -> Unhandled - by: mpp
Hi! I'm having an issue with the DA client. This is what it is register as an unhandled exception on the windows event log: I'm using the last nuget package 5.62.1032. It's weird because I'm using the...
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