It is a ML 1500 LPR series C. There is an ethernet hub connected through the serial port of the PLC. There is a C-More HMI attached to the Hub. Am I trying to change the IP address to the wrong thing?
At this point, I think we need part numbers for the cables even if possible. The Ethernet "hub" must be some sort of serial to ethernet converter, so identify that for sure.
There are a handful of other vendors of Ethernet/Serial devices that might be connected to the MicroLogix, like Digi and LanTronix and Moxa. Those might have a different configuration mechanism.
Sorry for the waste of time everyone. I was instructed to do something from the engineers above me that can't be done. They found the program you have to use to change the Address on the 1761-NET-ENI and downloaded it. Thanks again for the help though.