Not a huge deal, like the other guys said you lost your parameters. You just gotta go through all the CLC adjustments and make them correct. Don't forget to set the low 50s adjustments (51,52 etc) including the group for the floors it serves. In other words tell it the group has 3 floors even if it's a single car. Save all the adjustments as you go. Fire service Is off by default.
When you do your shaft setup and learn the door travel make sure you click on selector/front door then parameters then save all the parameters, you should see the value under saved as well as working. If you forget to go to the parameters and hit save, you will have all the values in the working field and you'll have a running car. But if power goes out you'll have to come back just to do a hoistway learn again. Learned that one the hard way.
The last couple times I've done a full setup on a dmc I didn't even have to do anything for the operator, after leveling down off the normal and putting it back on auto the doors cycled and learned the travel count themselves.
Easiest to sit on the cartop, you can do everything without moving.
