Mike Norman (the author of AFCS) included guidance files (found in the modules/plugin folder in Orbiter)for both the STS and DG/DGS for versions 2 and 2P1. It will also work with the XR1 and XR2. There should be three .ini files included:
AFCS.ini
AFCS (STS).ini
AFCS (DG).ini
The module always looks for the "AFCS.ini" file for guidance data. As installed, this file has the STS data pre-loaded.
If you wish to fly the DG/DGS/XR1/XR2, you'll need to copy the data from "AFCS (DG).ini" and paste it into the "AFCS.ini" file for it to work. The last thing you'll need if flying any of the DG-based vehicles is change the EI distance from the default (8.06M) to 6.98M. Two other important things to remember when using AFCS for the DG-based vessels:
1). Make sure the retro doors are OPEN. The .dll looks to see if the vessel has retro thrusters. If found, the autopilot uses the retro thrusters for the de-orbit burn. If you don't have the doors open, you're stay in orbit. But make sure you close the doors after the de-orbit burn is completed...otherwise, you'll be turned into plasma trying to re-enter.:blackeye:
2). Make sure no attitude-hold autopilots (ie. Prograde/Retrograde/HLevel) are on. Otherwise, AFCS will be unable to orient the spacecraft
I know Doug Beachy isn't a huge fan of autopilots for the XR-series, hence his reluctance to install them. To keep in that spirit when flying one of those beautiful birds, I turn off all automatic guidance and just leave the flight director on. Flying that profile manually to an unpowered landing is one heck of a challenge...and all the more satisfying when you do it successfully.
Best,
Cale