It's been many years since my last download to my 2522 flow computer, but I have added more floating point variables to the 7000 table and have saved it using Config25. after fashioning up a DB9 cable to connect to terminals 58, 59, 62 and setting up IPL25 to the correct settings, I cannot communicate with the flow computer. I have set SW1 to the "down" position which illuminates the far left LED to "Green". Am I forgetting to do something.....like invoking the acceptance of a download?? Please help!