Here’s where I am. I programmed all the 851 settings at the keypad after TL280 install, I don’t have the DLS software. All pretty straightforward, only weird thing is my Peer Key is all zeros, non-editable. After adding the settings I power cycled, and then put the data in the C4 driver, and got the establishing connection. The TL280 or the keypads show no errors at all, and it seems to be online. The connection status LED is blinking. I saw a couple of other DSC settings that had to be On in order for it to work, so I made sure they were on, which they were. Power cycled again, and still same thing.