i have to perform SCADA interface using visual basic. I have to show my process which is controlled by a PLC on a screen using Visual Basic. Please can anybody help me how to do the tagging using vb, and where can i obtain the required tutorials?

 

From your PLC vendor????

 

I suggest you should use OPC to communicate with the PLC. Most PLC vendors have OPC server software available for their PLCs. Then use the OPC Foundation Automation interface to write a VB OPC Client.

The alternative (probably easier) would be to buy an ActiveX driver for your PLC (Search Google for "ActiveX" and your PLC brand). Also search for "SoftwareToolBox".

You can do most of the screen stuff and data logging with the tools that are supplied with VB. There are loads of tutorials and help on the internet for VB or .NET (the latest VB version).

Warren
http://www.pc-pid.com
"the PC-based PID Controller people"

 

please could you advice me some suitable sites to look for interesting tutorials?

thank you.

 

Are u using rsview?? allen Bradley processor? What ver. of VB?

 

Try the TOPServer as the OPC Server that communicates to your PLC(s):
http://www.toolboxopc.com/

Use the OPCData.NET (which contains an ActiveX control) from VB to talk to the TOPServer:
http://www.opcwebclient.com/

Both of these products should give you all the capabilities you are looking for.

 

i am using a PLC from telemecanique.
i am using vb 5.0

 

I'm looking for a University/College that offer SCADA and related courses, can anybody please help me.

Thanks