I sat for a while trying to figure this one out, and there's quite a bit to this.
I did have to scroll up and down a fair bit to figure out what did what, but then at 64x64 there's not a huge amount of space to try and explain within the game itself!
My main annoyance was I think that the cursors should rotate the robot first, and then move in that direction if it's facing it. I kept having to backtrack a bit as I pressed left to "turn left" and ended up "turning left and moving one left"
I managed to get some factories working but I didn't manage to get the door open.. think I'll come back to it later and have another go when I've a bit more time to sit and think!