Vb.net 2015 and opc

[achille]

Hello everybody

i must develop an application with vb.net wich will communicate with opc server ( rslinx or kepserver ) have anyone already try it or have the code for that

thanks

 

[Archie]

What PLC are you communicating with?

 

[achille]

hello

i am working with micrologix 1100.

thanks for replying

 

[Archie]

So here are a couple options:

1) Use an OPC server which can be complicated to program and will cost for every run time. You can see an example of what it takes to read a value here in this thread:

http://www.plctalk.net/qanda/showthread.php?t=97862

2) You can use AdvancedHMI, which is a Visual Studio solution, that has a native driver for the ML1100, only requires one line of code to read a value, is much faster, and does not require a run time license nor a development license. Here is a quick example of how to read a value in code:

Dim value as string=EthernetIPforSLCMicroCom1.Read("N11:0")

Depending on what your objective is, you can build complete HMI's without writing any code. The fully functional base package is completely free.

 

[achille]

HI archie


thanks a lot,i downloaded advancedhmi and its working perfectly with the driver Ethernetipforslcmicrocom1.

have you any idea about communication using schnedeir modicon m340 plc ??

 

[kallileo]

Use Modbus TCP. It also works great.

 

[GaryS]

If you are looking for an OPC server check there out

http://www.ingeardrivers.com/index.htm

they also have an active X control for VB Net that works well
the active X in runtime free
I have been using then for years work well and the cost is not bad

 

[JesperMP]

To answer the original question, this website has a lot of info regarding writing OPC clients with .NET:
http://www.opcconnect.com/dotnet.php

 

[k_w]

Check out this OPC .net client toolkit
http://integrationobjects.com/products/opc-client-toolkits/opc-net-client-toolkit/

It works with VB .Net and is runtime license-fee free.

 

[widelto]

Maybe is not 100% related but last week I had problems connecting an OPC server from videojet called Clarinet to my client (FT view SE V8.0), I found this page with good white papers and good videos, I used them and resolved my problems.
http://www.opcti.com/default.aspx