I'm looking for a way to test MSG instructions that will be sent between a SLC and a Controllogix. Is there any way to test this, without the physical processors? I used RSLogix500 Emulate to run the SLC program. I think I can use RSLogix5000 Emulate to run the Controllogix program (have not tried it yet). Is there any way to get these two emulated programs to communicate with each other to test the MSG instructions? Thanks in advance.