win32com.client Not Found - Python - by: steve.korber
I'm trying out a trail version and I just want to make sure I can read a OPC-UA tag from out Ignition Server. I am using the Read.Main.py provided and I made some changes to the endpoint but the module...
View ArticleMethod Call in Python - by: Enrico
I'm trying to find an example how to use Python to call OPCUA Methods. My first question: when using the com interface is it at all possible to call methods? If yes would you have a link to an example?...
View ArticleRead ad Write multiple values - by: Jesus Rodriguez
Hi I have the following code to read and write: import win32com.client client = win32com.client.Dispatch('OpcLabs.EasyOpc.DataAccess.EasyDAClient') value = client.ReadItemValue('', 'CoDeSys.OPC.02',...
View ArticleDefine a "private" server, log data and export data - by: Peloso
Hi there, I'm a newbie in the OPC UA. I'm a mechanical engineer actually, but I'm down with my master thesis and I'm looking for a smart solution to some data manipulation. The goal is to take some...
View ArticleUpdate to Version 2020.2 - by: Enrico
Hello, I updated from version 2018.3 to version 2020.2. With version the 2018.3 the connectivity explorer was running fine (even today). After the update I get the following error message (see...
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Instantiate the client objects multiple times - by: mozesa
Hello! I would like to ask for some help. Currently I am using your trial version but in the end I would like to buy a QuickOPC Ultimate, but first I have to convince my boss. I am developing in Python...
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OPCuA durch eine Firewall oder einen ssh-Tunnel - by: Kannix
Hallo, hier in der Technikerschule München betreiben wir auf sehr niedrigem Niveau Programmierung mit OPCuA. Mit dem Toolkit von OPCLabs prgrammieren wir in Python Zugriffe auf diverse SPS-Stuerungen....
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ReadMultipleItems - by: Sakai
Hi , i did the example in python to test a OPC connection with the KitServer, and everthing went fine. But when i was trying to connect with another OPC server i receive a timeout and then, i get the...
View ArticlePackaging Python application using pythonnet - by: mozesa
Hello! I would like to ask for your kind help. I would like to deploy the application. I use clr and not win32com.client. Currently the app uses the assemblies from path: c:\Program Files (x86)\OPC...
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Subscribe to events - by: mozesa
Dear OPCLabs, I would like to ask for your kind help. This snippet works fine, I got the events right. There is a Python project in which I have to use another OPCUA implementation (FreeOPCUA) - the...
View ArticleAlarms and Events - by: K-R IKE
Hello. We are considering purchasing your product and are using your free trial version at the moment. We would like to see how OPC Alarms & Events operate, but OnNotification doesn't execute with...
View ArticleSubscribeMultiple Example using Python - by: jgonzalez
Hello, I have a customer that is working on a client application using Python. The customer is requesting an example of "Subscribe to Multiple". Our team's knowledge of the python language is very...
View ArticleUsing Python with Quick OPC - by: jnickles
I currently have a PLC from which I am trying to pull data and place into an excel chart for every day that the machine is running. I currently have a python script that pulls data from an excel sheet...
View ArticleCannot view DeltaV in Connectivity Explorer - by: Mattias
Hi, I have a local server (OPC.DeltaV.1) that I can view both in OPCWatchIt and with another 3:rd party program. When I try to connect to the server with Connectivity explorer i get this...
View ArticleMigrating from EasyOPC.NET 5.2 to OPC Studio 2024.1 - by: tlaford
I am trying to migrate my code from an antique 2012 version (EasyOPC.NET 5.2) to the modern version (OPC Studio 2024.1) and I could use a little help. My project is written using Visual Studio 2017 in...
View ArticleOPC UA - Browse data nodes recursively using VB.net? - by: micham
Hi, Do you gave this example in VB.net? Examples - OPC Unified Architecture - Browse data nodes recursively opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User's...ata%20nodes%20recursively.html...
View ArticleHow can I get the OPC item type? Can I get it with a read? - by: micham
How can I get the OPC item type? For example: Boolean, Byte, Double, DateTime etc... Can I get it with a read? Thank you. Michael
View ArticleBuild simple UA client with just few libraries - by: Šilhavý
Hi. I want to ask, if it is possible to create simple UA client for writing and reading one value from server. It is in Visual studio 2022 winform and C#. With quickOpc 2020.2 a wa able to do this just...
View ArticleWriting value and timestamp to OPC DA 2.05a - by: ScottEwine
I am trying to write data to a PI server that supports 2.05a, I am using the following code snippet: DAVtq dAVtq = new DAVtq(); EasyDAClient easyDAClient1 = new EasyDAClient(); try { dAVtq.Value =...
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EasyUAClient communication makes Windows application crash - by: Crodel
Hi, we have a test bench software using QuickOPC (2018.3) for OPC UA communication with a S7 PLC. The (Windows) application runs without problems in two installations (unfortunately in China, and we...
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