The Data Matrix code tape, which is only 25 mm wide, is attached directly in the shaft of the stacker crane. The 2-D camera is located on the moving carrier. In addition to simple installation and commissioning, the PXV offers the advantage of no follow-up costs or calibration and maintenance intervals. The safePXV safe absolute positioning system with PROFIsafe is suitable for SIL 3 / PL e applications at particularly high altitudes. In addition, it is extremely insensitive to dirt—code redundancy allows several codes to be read simultaneously on the tape.