Right now PLC1&2 communicate with produced and consumed tags. But I also want to do produced and consumed tags between PLC2 and PLC3. I would also like to do the same with PLC2 and PLC4. What is the best way to do this? Should I be purchasing two 1783-NATR? One for each PLC3 and PLC4 to bring them to the 192.168.1.xxx network?