How to connect OPC UA server to S7 300 PLC - by: samber41
Hello to all, I am working on a project where i have to connect a S7 300 PLC to a OPC UA Server. The reason of connection is because i want to read the data from PLC and transfer this data to OPC Ua...
View Articlelicenses.licx - by: bobday
We recently purchased a license and every time we try to run a program in VS 2017 it gives an error message about a license file and we need to delete licenses.licx. It keeps recreating it every time...
View ArticleOverride Default OPC Foundation CertificateStores Directories, WHERE??? - by:...
I am trying to figure out how to override the locations of the OPC Foundation certificate stores on a windows computer for the EasyUAClient. Currently the certificate store is ProgramData\OPC...
View ArticleRejectedCertificateStore Property in older version - Please Help - by: dataman1
To All, I am currently running 5.35 of the OPCLabs UA client. I am trying to find where RejectedCertificateStore is in this version? I am able to use ApplicationCertificateStore and...
View ArticleWPFLiveBinding in VS17 - by: marco
Hello, while evaluating your software, i faced following Problem. At step 3 (described here) this error keeps flashing, when dropping the WPFLiveBinding on the window. [File Attachment:...
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...
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 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 ArticleUse VBA in Excel to access OPC UA data - by: Monks
My question is: Your website lists the following code example for VBA: ' Create EasyOPC-UA component Dim Client As New EasyUAClient ' Read node value and display it Range("A1").Value =...
View ArticleOnDataChangeNotification - firing order - by: Wagner
We subscribe to ~280 nodes of an Siemens OPC-UA server using SubscribeMultipleMonitoredItems. If a value of a subscribed node changes the OnDataChangeNotification fires and we get the new value of the...
View ArticleTest for Valid License - by: jgyenese
Is there any way to test that the license is valid using code? Or perhaps a way to instruct it not to run as a demo if the license is invalid? I don't want to have to wait 30 minutes for something that...
View ArticleServer Auto Tag Creation Doesn't Work with QuickOPC - by: jgyenese
I have an OPC server that will automatically create new tags if the client requests it in one of two ways: 1. By calling the server Tag Validation method. 2. By calling the server Add Tag method. I...
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 ArticleImporting Type Libraries to Delphi - by: garysn
Hi, I'm just evaluating QuickOPC 2018.1 using Delphi XE2 and Delphi Seattle under Win 10 64 bit. While following the instructions on...
View ArticleSubscribing more items in Turbo Delphi 2006 - by: oleg.rosa@seznam.cz
I need subscribe to OPC UA Server ca. 3000 variables in cycle. The Server allows max. 2000 items per one subscription. When I use code in my program, see bellow, the Server returns only 2000 items on...
View ArticleExcel Option (licenses needed, and their deployment) - by: support
From: OPC Labs Contact Form - . Sent: Thursday, March 8, 2018 12:58 PM To: Z. Subject: OPC Labs Contact Form - Excel Option [...] Hello. I have to connect a Excel file with a PLC and already test your...
View ArticleRuntime licenses - by: dani.hartman@metronik.si
Hello. As I understand your licensing policy, I only need to buy a Quick OPC Professional Single Developer + Runtime Free License and I can develop software only on one computer but deploy to any...
View ArticleOPC UA Performance Analysis - by: samber41
Hello, I want to do the OPC ua performance analysis based on sampling interval, round trip delay , security mechanisms and also the subscription mechanism of opc ua servers can anybody tell me which...
View ArticleRemote Locking? Is it possible? - by: lux1
Dear OPC Labs team, My current situation is that I read some variables from a PLC Control and write modified versions of them back. Between the read and write it could happen that the value of the...
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Siemens OPC Server: error calling method - by: federica
Hi, I'm starting using your SDK (QuickOPC 2018.1, in particular OPC-UA under COM with C++) and I need your help. I need to read some variables from a Siemens Sinumeric 840D sl. From the Sinumerik...
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