Reading Time - by: Captain_Dash
Hello, When we want to subscribe to a structure in our c# code which maps a structure on our plc server. First we subscribe to the variables and then we read the values. On our first try we used a...
View ArticleDelphi 10.2 Tokyo copatibility - by: m.baumgartner
Hello, My team is about to upgrade our Delphi version from Delphi Seattle to Delphi Tokyo. Has anyone successfully switched to Tokyo with QuickOPC? Thank you.
View ArticleGetting URL for PLC Tag from UABrowseControl - by: AdamBOD
I'm trying to use the UABrowseControl as a means of dynamically updating a DataTable but I'm unsure of how to create a URL like this...
View ArticleBadFilterNotAllowed OPC-UA error with KepserverEX V6 - by: sun21
Problem: After we've upgraded KepserverEx OPC server from V5 to V6 errors appeared. Client subscription to tags with boolean datatype are failing with following message. (everything was OK for KS V5...
View ArticleOccasional exception when writing to tag - by: cromarty
I get occasional exception writing to a heartbeat tag (heartbeat is sent every 1s). Once it occurs the first time, then it continues to occur until I stop the program for a period of time. Even...
View ArticleError Browsing Tags - by: I-Tecnology
Hi, I have configured the OPC server (TopServer 5.21), DCOM and all I usually need in my application. I have installed on the same pc your library 5.11, 5.35, 2016-2. If I try to browse the OPC server...
View ArticleBrowsing error - by: I-Tecnology
Hi, I have configured the OPC server (TopServer 5.21), DCOM and all I usually need in my application. I have installed on the same pc your library 5.11, 5.35, 2016-2. If I try to browse the OPC server...
View ArticleBrowsing error - by: I-Tecnology
Hi, I have configured the OPC server (TopServer 5.21), DCOM and all I usually need in my application. I have installed on the same pc your library 5.11, 5.35, 2016-2. If I try to browse the OPC server...
View ArticleConnecting Client -> Server without network connection - by: Captain_Dash
Hello, we want to run the opc server on a pc together with a client application on the same pc. But this pc should not be connected with a network. Is it possible to discover the server by the client?...
View ArticleOPC UA and Java - by: samber41
Hello all I am working on a project. We have one landfill site in germany and from there we have to measure the methane gas concentration through gas valve and for now the data is collected by s7 300...
View ArticleHigh CPU usage peaks - by: RH
Hello, we are using QuickOPC in COM from Delphi with subscriptions and about 100 variables. Recently we observed that we get high peaks of the CPU usage for about 2-5 seconds every few minutes. This...
View ArticleWriting to Kepware OPC DA string tags issue - by: Stakheiko
Hello. We have used QuickOPC 5.30 kit to develop a client application which subscribes to the Kepware OPC DA server tags and based on some numeric type tag values writes corresponded messages to the...
View ArticleDifference between WriteValue und WriteMultipleValues - by: RH
Hello, I discovered a critical difference in variant handling between WriteValue and WriteMultipleValues. When I write an empty string to an OPC variable, it works using the WriteValue procedure. But...
View ArticleRestrict browsing to nodes / do not display attributes - by: m.baumgartner
Hello, I'm trying to use the Generic OPC-UA Browsing Dialog (see doc here : opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...PC-UA%20Browsing%20Dialog.html ). It works fine except for one...
View ArticleBrowsing issue with KepServer - by: m.baumgartner
Hey, We're using the Generic OPC-UA Browsing Dialog and it's working as expected with the sample server of opclabs available online. However we can't make it work with KepServer 6.1 as when we validate...
View ArticleDynamic UAReadArguments - by: AdamBOD
I'm trying to ReadMultiple UA Tags with a dynamic list of tags but I'm unsure of how to go about it, is there anyway of either parsing a normal array to a ReadArguments array or is there a means of...
View ArticleOLE Error when invoking Generic OPC-UA Browsing Dialog - by: m.baumgartner
Hello, On one of our developers VM dev environnement, we encounter a OLE error message when invoking the Generic OPC-UA browsing dialog. Here is the message : [File Attachment: olezoom.png] Here is...
View ArticleReconnecting after server close connecion - by: bmts
Hello I have a problem with reconnecting. I use in my .Net application construction like this: ObjectDataPathAsString = "[ObjectsFolder]/" + PlcName + PartialObjectPath; // OpcUaBrowsePath =...
View ArticleHow to implement OPC UA in .NET and Xamarin HMI - by: dhiren.goyal
I wanted to implement OPC UA and Xamarin.
View ArticleBrowsing issue with MOXA AOPC Server UA - by: m.baumgartner
Hello, We're having trouble connecting to MOXA's Active OPC UA Server from QuickOPC UA COM generic dialog. Here is a gif of an attempt to connect with QuickOPC [File Attachment: uabrowse.gif] Here is a...
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