I have a AB PowerFlex 755. I have it configured on an Ntron switch. I have a Machine LAN with a AB GuardLogix PLC, Point I/O, and a panelview+ also on that Switch. When I plug the drive into the switch the parameters switch back and forth between the parameters I entered and default values. I am not sure what is causing this. When the drive is running the correct parameters are there, when it is not running they start to switch back and forth. Any ideas??