Stack Overflow
Stack Overflow

Questions tagged [opc]

OPC (Open Platform Communications) is the interoperability standard for the secure and reliable exchange of data in the industrial automation space.

OPC (Open Platform Communications) is the interoperability standard for the secure and reliable exchange of data in the industrial automation space.

From: http://www.opcfoundation.org/

Useful Links

648 questions
0
votes
1 answer

Auto updates OPC server

I have a C# source code for OPC server. The code is working and I connect successfully but I have one big problem, the data auto update does not work, in other words, I need to restart the server so it will take the new data from the data base. The…
S.K
  • 185
  • 2
  • 2
  • 6
-1
votes
1 answer

C# Program Closing and Restarting Automatically at Random Intervals

I've built a C# application to interact with a Control System at work. It calculates some values and/or pulls them from a spreadsheet and then writes them to an OPC server using EasyOPCClient. When I run this application, it will run for 3-5 minutes…
Hollis Scriber
  • 159
  • 1
  • 8
  • 18
-1
votes
1 answer

Building a simple server using open62541 in Windows

I am trying to build a server using open62541 by referring to the documentation provided at this page. I am able to generate the open62541.c and open62541.h files by referring to this webpage. I generated these files using CMake and VisualStudio as…
Gopala Krishna
  • 117
  • 1
  • 12
-1
votes
1 answer

OPC UA communication with different PLCs

I have a question. Does OPC UA solve the problem of communicating with for example with all type of PLCs ? The problem is for us , PLCs are different, and we want to grab data from all ! Can OPC UA do anything in here to simplify the process ?
Mojtaba Asadollahzadeh
  • 87
  • 9
-1
votes
2 answers

using python 2.7 and library OpenOPC using read or write function explode

I use python 2.7 & OpenOPC to communicate with OPC servers. I have 2 different servers. With one server everything is Ok. I can: - connect and get information from the server - get list of objects - get properties of objects - read value of…
Renaud
  • 11
  • 4
-1
votes
3 answers

Can I used Step7 as PLC simulator?

I have PLC program written in Step7. Also i have SCADA with OPC Server. I want to simulate PLC with programm from Step7 and connect it to OPC Server, because i want SCADA testing. Can I used Ste7 as PLC simulator, how can i do that ? I founded…
Luk
  • 185
  • 1
  • 2
  • 10
-1
votes
2 answers

Linking of OPC UA and DDS - How to integrate?

I have read that there might be some specification on the integration of OPC UA and DDS within "OPC Foundation's DDS OPC UA Part 14". Can somebody tell me how to find this specification or where it has been released? Through the website of the OPC…
Maxinator
  • 81
  • 4
-1
votes
1 answer

C# OPC client shutdown

I'm novice at OPC and I'm making an OPC client on C#, and testing it at Matrikon OPC server. And i have a question, how could i shutdown connection with the server when program made it's business ? Cause I notice when I'm finishing my program it's…
Jam
  • 101
  • 11
-1
votes
1 answer

How to send string from Twincat PLC OPC UA server to unified automation OPC UA C++ Client program

How to send string (temparature, pressure,setpoint ) values to OPC UA C++ CLIENT program mean the client can acess values in the server it can read or write
Hunnybabu
  • 21
  • 2
-2
votes
2 answers

Get data from RSLinx and send to SQL Server through Visual Basic or C#?

I have a question: can I write a program in VB or C# that gets data from RSLinx and sends it to SQL Server? I have searched but only find information with programs with cost. I'm new in this. Does someone know if this is even possible?
Frank R
  • 1
  • 2
-2
votes
2 answers

Java OPC-UA implementation to Android

There is this pure java implementation: https://github.com/eclipse/milo of an UPC-UA Client/Server. Now I guess it shouldn't be too hard to implement this for an android application. So my current progress is an empty android project, where I try…
TobiasW
  • 861
  • 3
  • 13
  • 36
-2
votes
2 answers

How to interface OPC UA Server from Delphi application?

While there are plenty of Delphi OPC-DA Client components (commercial and open source), I can't seem to find Delphi component for OPC UA. In the absence of a Delphi OPC UA solution, should I look into using an OPC-DA to UA gateway? EDIT Native…
Joshua
  • 1,709
  • 2
  • 24
  • 38
-2
votes
1 answer

Writing OPC - need some advice

Im using free fatrat library to create server and i have a few question: On server site i think that I only need to do is give parameter about server like clsid, description, version and create branches and leafs, am I wrong? I dont know either if…
detheroc
  • 1
  • 1
-2
votes
1 answer

Will anyone help me with Getting data from an OPC server into my iPhone Xcode project?

Will anyone help me with Getting data from an OPC server into my iPhone Xcode project? I have an OPC server and I want to communicate with it to send and receive data from it! I really have no idea where to start, nevertheless, I need to make this…
JasonH
  • 93
  • 8
-2
votes
1 answer

Remotely Launch an application on a remote machine with C#

Please, i desperately need help. I am trying to figure out how to send TCP Data Packets (C#) to an OPC Server in order to be able to control and monitor my linear motor? A simple solution could be to launch the application (exe.file) of the OPC…
Titi
  • 11
  • 1
1 2 3
…
43
44