Quality Assurance Data - by: neilcooley
Hi We have been using OPC UA for general data logging but now we are looking at logging more sensitive data and have a few questions. With regards to OPC UA and the SDK, if the quality is GOOD does...
View ArticleFilter subscriptions - by: federica
Hi, I'm using QuickOPC COM, developing in C++. I want to be notified when a particular tag in the OPC server will change its value. I'm only interested in receiving new data only when the value has...
View ArticleReadMultipleItemValues provides out of order values - by: ZParham
Hello! A customer reached out to us with an issue she is having with an application she is creating. According to the documentation, the element positions (indices) in the output array (ValueResult)...
View ArticleWritting in a Arrayvariable with OPC UA - by: Nordmann447
HI, i tried to write into a Arrayvariable but i cant find the correct Code in the discription. Reading a array was not a Problem, i write something like that: Dim Variable As UAAttributeData =...
View ArticleuaHostAndEndpointDialog Error - by: p-toth
Dear Moderator, I want to modify some data in existing application which is break if I want to add/change new OPC UA host in uaHostAndEndpointDialog. So when click to "Add OPC UA Host", i added OPC...
View ArticleEasyOPCDA Client Freezes when placed in multithreaded application - by: Restrepo
Hello, I am currently working with a customer that is running into a strange situation, and I was hoping to get some guidance on what could be the issue that he is experiencing. The application being...
View ArticleIntrinsic Component Configuration - by: tblong
I'm using the latest v5.63.162 release and am attempting to add intrinsic config support for our application following these two resources and went the ".ini" provider route:...
View ArticleEasyOPCDA Client Freezes when placed in multithreaded application - by: Restrepo
Hello, I am currently working with a customer that is running into a strange situation, and I was hoping to get some guidance on what could be the issue that he is experiencing. The application being...
View ArticleGetting error: No method available to convert ProgID to CLSID - by: tblong
We have a Windows service application using QuickOPC v5.63.162 and are trying to connect to a remote OPC DA server which is the ArchestrA FSGateway product with its ProgID=ArchestrA.FSGateway.2 and...
View ArticleReadMultipleItems returns old values - by: porporiniHSG
Hello, We have purchased the QuickOPC Ultimate edition (v2021.3) and then we have developed a simple application in .NET 4.8 Framework. In our C# based application we have created a new EasyDAClient...
View ArticleProgram termination ('DynamicShellcode') under SOPHOS cloud-based virus...
After changing to SOPHOS cloud-based virus scanner our QuickOPC-UA based program is terminated due to 'DynamicShellcode' by SOPHOS when trying to connect to the OPC UA server (see attached screenshot)....
View ArticleClik here to view.
Can't view array data via OPC UA vb6 - by: dondoc1
I'm evaluating your tools and I'm trying to read from our server some values. I can see 5 of them but the 6th one (which is an array of double) causes an error in my vb6 code when using "ReadValue"...
View ArticleGetting error: No method available to convert ProgID to CLSID - by: tblong
We have a Windows service application using QuickOPC v5.63.162 and are trying to connect to a remote OPC DA server which is the ArchestrA FSGateway product with its ProgID=ArchestrA.FSGateway.2 and...
View ArticleClik here to view.
Subscribing and reading large number of tags. - by: yong
Hi We are testing the performance of OPC Subscription. I've looked at the following posts for some guidance: However I'm still unclear what is the best approach for subscribing to a large number of...
View ArticleException from HRESULT: 0x80004005 (E_FAIL) using Client.ReadValue() - by:...
Dears, My customer got a new machine and I'm integrating it in the MES interface. I'm trying to readout the value of the field of below NodeId = ns=6;s=::AsGlobalPV:Numero_Commessa The field is type...
View ArticleNo Reconnect on OPC DA XML - by: Emes
Hello Support I have the problem that after a connection to the OPC XML servers is lost, the subscriptions are not restored. To fix this, I built in a function that deletes all subscriptions...
View ArticleClik here to view.
Can't browse opc ua server. - by: yong
Can't browse opc ua server. I installed the opcua server on another server and testing opc ua browse. UA expert searches, but EasyUAClient DiscoverLocalServers does not. (endpointDescriptor =...
View Article[Delphi] Set EndpointSelectionPolicy.securityPolicyUriStr - by: BAUMGARTNER
Hello, I opened a similar issue last time here : www.opclabs.com/forum/ua-com-discovery-browsing/3358-delphi-set-endpointselectionpolicy this time, for the same use case, i'm not trying to affect that...
View ArticleOPC UA VBA Com Object Connection Management - by: bpoulsen
I have an Excel application that supports several upload and download VBA functions that each move large amounts of data between the a single PLC OPC UA server endpoint and the Excel spreadsheet. These...
View ArticleAccommodate IOPCSecurityPrivate Interface in OPC DA Server - by: gkalipershad
Hello Z, We have an OEM user that has customers with OPC DA Servers that support the IOPCSecurityPrivate Interface. They were reaching out to see how to accommodate this from the OPC Data Client...
View Article