I know little about this scada package, but most people would connect the PC via the FX2NC-ENET-ADP to the FX2N to put the PLC on ethernet. Depending on the location of the PC vs the PLC, you could also use a RS232 - RS422 converter (B&B electronics makes such a product and is knowledgable about Mitsubishi)and plug into the front port of the PLC. Mitsubishi also sells an OPC driver to finish the connection