| 摘要 |
PROBLEM TO BE SOLVED: To prevent the interference of a plurality of movable bodies whose operation paths overlap. SOLUTION: When determining abnormality, a general controller determines whether or not a first movable body 120 and a third movable body 320 are present at a standby position by a corresponding photosensor, performs a restoring operation of returning the movable bodies 120 and 320 to the standby position by a corresponding drive portion when the movable bodies 120 and 320 are not present at the standby position, and performs a restoring operation of returning a second movable body 220 determined as not being present at the standby position by a second photosensor to the standby position on condition that the first movable body 120 and the third movable body 320 are present at the standby position. COPYRIGHT: (C)2011,JPO&INPIT |
