text: <s>[INST] 1747-SCNR Loses Keeper when Power Cycled. I have read the tech note on the issue with Powerflex 700 drives using a 20-COMM-C module possibly causing keeper loss on a Controlnet scanner. The situation I have is the same condition but occurs on networks with Powerflex 1336 plus 2 drives utilizing scanports and networks with Powerflex 700 drives. When we power down the PLC we get the SIGM message and I/OU displayed. We have to re-download the network file and then everything starts working, The scanner is a 1747-SCNR series A Rev C with four 1336 Plus 2 drives - Catalog 1336F Major Rev 40 Minor Rev 001. I believe these are utilizing scan ports for their comms. The same issue happens to 1747-SCNR Controlnet scanners controlling PowerFlex 700 VC 600V drives utilizing DPI to ControlNet modules, with a mix of drives at Major Rev 3 Minor Rev 002 and Major Rev 4 and Minor Rev 010. How do we avoid the Keeper loss or having to redownload the network after we cycle power to the PLC?? Do we need to flash the drive firmware or is this a scanner issue?? [/INST] The keeper is stored in the lowest numbered ControlNet address of a network. Make sure that the drive is not the lowest number. Also make sure that any redundant processor rack is never the lowest address, it creates a LOT of overhead. Good Luck,Tobin \\n </s>