Teaching units and teaching methods

Regardless of the inclination with respect to the reference plane of the transfer section, to provide a teaching unit can be determined accurately the position of the overhead running vehicle with respect to a reference position of the transfer unit. Teaching unit overhead traveling vehicle (10), and it is mounted on one of the load ports (3) transferring the transported object is performed by the overhead traveling vehicle (10). Teaching unit is in a state of being separated from other of the overhead traveling vehicle (10) and the load port (3), the distance sensor (23X1 for detecting the position of the overhead traveling vehicle (10) with respect to a reference position of the load port (3) , and 23Y1,23Y2), in a state of being separated from other of the overhead traveling vehicle (10) and the load port (3), the inclination of the distance sensor (23X1,23Y1,23Y2) with respect to the reference plane of the load port (3) It comprises a distance sensor (23Z1,23Z2,23Z3) for detecting and.