Yes, you can do this. But it can be a little tricky. Be aware that the emulator will only emulate a DH485 network. But that is OK for what we are doing.
Emulate 500
In RSEmulate 500 go to File Open and select your first project to emulate and assign a unique node number. After selecting, click Run. Go back to File and Open and select your second project to emulate. Assign a different node number. Click Run. Repeat this for however many controllers you need to run.
RSLinx Classic
Open RSLinx Classic and create a new driver. Select the SLC500 (DH485) Emulator driver and assign a unique node number.
In RSLinx open the RSWho menu and browse this driver and you should see each of the emulated controllers. So you'll see, one instance of Emulate can run multiple controllers.
Now FactoryTalk View cannot access these emulated controllers without a little help. It needs RSLinx to create OPC Topics. This means you need a licensed copy of RSLinx Classic. Lite won't help us here.
In RSLinx, browse RSWho to see your emulated controllers. Right click on the first controller and select Create new DDE/OPC Topic. Verify the name used for the topic. Change it if necessary and click Done when you are ready. Repeat this for each controller.
FactoryTalk View
In your FTV ME application from the Application Explorer window right-click on the project name. This is usually the second line and is named the same as the first line (the FactoryTalk Local Directory name). Select Add New Server and select the OPC option. Give it a unique name (don't use the topic names), specify it is hosted on the local computer, then on the bottom click on the browse button and select RSLinx OPC Server. Click OK twice to accept changes.
Now, in your application when you want to select an address from your SLC the tag browser window will show you the OPC Topic names you defined above in RSLinx. Although you might have to refresh folders to get them to appear the first time.
Summary
So in summary that is one instance of Emulate 500 that is running multiple emulated controllers. In RSLinx one DDE/OPC topic for each controller. In FT View, one OPC server that uses those multiple topics.
OG