OPC /VB/RSLogix app question...

[JamesEspy]

I'm very new to OPC and VB. I have a project where I am using a barcode reader to read a barcode to an RSLogix register. I would like VB to monitor this register through RSLinx and OPC.
I would like VB to retrieve this barcode and set it in a VB text box. The project is actually much deeper than this, but if I can accomplish this then I should have no problem finishing the rest.
My biggest question is how does the VB program reference the tags? I have used DDE in the past and understand how DDE references items, but we need to use OPC for flexibility issues in the future. I have set up an opc server and a group so far. Does anyone have any sample code that might help me with this application?

 

[superbab]

Rockwell software put out a VB demo that I used to learn OPC with RSLinx, but now I can't find it on their own website. It was published under tech note A7347.

 

[JamesEspy]

Thanks for your reply.

 

[superbab]

Big brother is watching and modifying our messages. For a shot time the file will be at

http://www.bonescontrols.com/opcdemo.zip

get while you can.

 

[JamesEspy]

appreciate the help!