The application module Drilling CPS drills 4 drilling holes into the lower part of the housing. The workpieces are recognized by the first light barrier when moving into the application module and the carrier will be stopped. When the carrier has been stopped, the workpiece will be checked. The workpiece request checks if there is a front cover on the carrier. The workpiece request in the middle (2) checks if there is a back cover on the lower part. The left request checks if the front cover is in its correct position on the carrier. When the front cover is in its correct position and there is no back cover on it, the first two drilling holes are drilled into the left side of the front cover. Then the X-axis moves to the right position and the two right drilling holes are drilled. After that, the carrier leaves the application module iDrilling.