Trying to read OPC UA value with Delphi - by: eh
I'm trying to read a value from a tag on my OPC UA server. Therefore I used following code, but I get an error(see attachment). What am I missing or doing wrong? [File Attachment: Knipsel.png]
View ArticleCan't read or write with TOP Server - by: ifdefelseif
Issue resolved. The problem was with the network adapter.
View ArticleException thrown "certificate is not trusted" - by: Savage
Using the UA sample "Client Full", I am getting an exception (UnifiedAutomation.UaBase.StatusException) saying "Certificate is not trusted". The exception is thrown and caught in the program's...
View ArticleCertificate not trusted - by: Savage
Using the UA sample "Client Full", I am getting an exception (UnifiedAutomation.UaBase.StatusException) saying "Certificate is not trusted". The exception is thrown and caught in the program's...
View ArticleWriting many tags - by: I-Tecnology
Hallo, I have a multithread application and many EasyDaClient objects. PLC is only one. When I write a big number of tags(about 600bytes) with a writeMultipleValues operation using one of this objects,...
View Article2017.1 Browse doesn t works anymore in delphi - by: alr1976
Hi! I have used in 2016.2 to retrieve root node and work well but after update last version doesn t work anymore in Delphi. My function is: I have now always empty nodes
View ArticleOPC UA using PHP - by: support
From: OPC Labs Contact Form - K. Sent: Tuesday, September 05, 2017 8:37 PM To: Z. Subject: OPC Labs Contact Form - OPC UA using PHP - Forum Post Attempt [...\ I am attempting to get support for using...
View ArticleGetting OPC property values in Delphi - by: alr1976
Hi! It possible to have a Delphi demo to read properties in opc da? I have read Vb example but it use old opc library and now I have ServerDescription and node scriptor. Br,Alessandro
View ArticleHow to activate the DLLs on target computer without using License Manager -...
Hello. I have just acquired a license of development and I have the same problem described in another topic to deploy my application on the client. May I obtain the document describing the method? Best...
View ArticleUse QuickOPC in Turbo Delphi 2006 - by: oleg.rosa@seznam.cz
Is possible use QuickOPC in Turbo Delphi? If it's possible, could anyone advise me how, please? Thank you BR Olin
View ArticleUse of EasyAEClient - by: Millon
Hello. I use classic COM EasyAEClient. Is it possible to know the state of a subscription? Is it possible to disconnect from the OPC server connected with the ServerDescriptor object ? Best regards
View ArticleOpcUaClient Subscription has Stoped, after write To subscribed object from...
Hello I am using in my application 4 EasyOpcClients per one UaServer/PLC. 2 clients has subscription on diferent structures, and other 2 client only write or read some structure to/from server. 1....
View ArticleUsing OPC causes BitDefender to kill executable - by: WordsLikeJared
Here's some example code: Suppose this code is being ran by A.exe. When A.exe is ran and is called, BitDefender will kill the A.exe process. BitDefender says it detected a threat. I've gotten IT at my...
View Article"Class not registered" error - by: tlaford
I have developed an OPC client using EasyOPC.NET 5.2 to communicate with a mahlo 10A OPC server (Server Class = mahlo.10AOpcServer.1). The system has been up and running just fine for 2+ years. Now we...
View Articlecould not read the opc tag values.we are getting timeout error - by: support
From: S. Sent: Thursday, September 28, 2017 6:05 AM To: Z. Subject: ... Dear Zbynek, the demo version could not read the opc tag values.we are getting timeout error.we are getting timeout error. [File...
View ArticleOPC HDA - by: tom.nettell@twinthread.com
Does OPC Labs have a .NET SDK that supports OPC HDA?
View Articlecould not read the opc tag values.we are getting timeout error - by: support
From: S. Sent: Thursday, September 28, 2017 6:05 AM To: Z. Subject: ... Dear Zbynek, the demo version could not read the opc tag values.we are getting timeout error.we are getting timeout error. [File...
View ArticleIOPCSyncIO.Read when trying to read a value from a OPC server - by:...
I am trying to develop an OPC client to read a Thermo Fisher OPC server. I have used the OPC Foundation library to connect to the server, browse the elements and they try to read the first element but...
View ArticleHow can I AddNodes to ObjectsFolder? - by: Wagner
I have an OPC UA Server with some predifined ObjectTypes. My goal is to add some objects with one of the predefined types to the ObjectsFolder 'on the fly'. Does QuickOPC support the 'AddNodes'...
View ArticleModbus TCP - How to read strings in holding registers - by: ee12205
Hello, I'm trying to develop one application using Modbus TCP using a Modbus TCP/IP Ethernet channel. The goal of the application is send one string (10 char) to the Kepware. And at this moment i can...
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