Hello, I acquired 5 AB Compactlogix racks with L31 processors. The processor batteries had been disconnected. I have not been able to establish com to the processors. Using a USB-1747-CP3 cable and RSLinks, I am able to see the complete rack, including the processor. When it scans, each node with the exception of the processor appears to be working. When I try to look at the processor using RSLinx or update the revision on the processor using Control Flash 12.00.00or Control Flash 12.00.00 in RSLinx 5000, RSLinx stops working, producing a pop up window on the computer stating the same. I also have a Ethernet connection to a AB 1761-NET-ENI to the processor. Using that connection, all I can view is the AB 1761 device. I have tried both connection on multiple racks with the same results. Any advice would be greatly appreciated. Thanks, Jim