Hi,
I am developing an RSView32 application with ControlLogix right now. This is my setup with which is working fine:
1. You must have a version of RSLinx installed that supports OPC connections, since you can't use a direct driver with ControlLogix from RSView32 as a few posters have mentioned. I am using RSLinx Gateway.
2. Create a new driver in RSLinx of type AB-ETH1 (Ethernet). Configure at least the address of the PLC you want to browse tags on. You should now be able to browse the PLC in the RSWho window.
3. Now you need to create a topic so RSView32 can use it to access tag data. In the DDE/OPC menu in RSLinx select "topic configuration" and create a new topic. Browse to the CPU (you can't just select the PLC unlike RSView Enterprise) in the right hand window then click "apply" to associate them with each other. Note the name of the topic for the next step.
4. You need to create a node in RSView32 to talk to this topic you just created. Create a new node - the type should be "OPC Server". The type is "local" for machines with only a local client. I have not specified an access path, left blank. THen enter a node name which is the same as the topic name which is the same as the topic you set up in RSLinx Gateway. Finally, the node must be ticked as enabled.
5. Now, any tag you set up should look vaguely like this:
name: TestTag
type: digital
Data source: device
Node: ### (name of the node you created)
Address: [###]Program:MainProgram.TestTag
6. If you have problems accessing OPC data, RSLinx Gateway has an test OPC client that lets you read and write to a controller in a simple fashion.
Hope that helps!