In the automated multi-layered storehouse the most important equipment is the warehousing hay stacker, the warehousing hay stacker realizes the entire warehouse system automatic function key equipment, storehouse duties and so on shoulders the storehouse, to enter, is the automated multi-layered storehouse core part, West of this topic family household Mitsubishi FX2N series PLC is a foundation, has designed in the multi-layered storehouse the hay stacker PLC control system. Mainly includes the I/0 assignment, the principle said that subprogram design.
key word: PLC multi-layered storehouse I/O assigns the trapezoidal chart