text: <s>[INST] Best practices to connect a group of PF 70 to and Ethernet network Greetings everyone! I appreciate your help to know what is the recommended topology to connect drives, specifically PF70 in a Ethernet network? I thought that ether ring or star topology would apply but the customer mentioned that Rockwell recommends star topology for these kind of equipment and that there is a tech note with information but I have not found it yet. thanks a lot for your support. [/INST] The 20-COMM-E only has a single ethernet port on it, so it cannot be part of a device level ring (DLR). \\n </s>