As Moses entered the tent, the pillar of cloud would come down and remain at the entrance, and the LORD would speak with Moses.
KJV
And it came to pass, as Moses entered into the tabernacle, the cloudy pillar descended, and stood [at] the door of the tabernacle, and [the LORD] talked with Moses.
ASV
And it came to pass, when Moses entered into the Tent, the pillar of cloud descended, and stood at the door of the Tent: and Jehovah spake with Moses.