FIGS. 20A and 20B are block diagrams showing the primary functions of the microprocessor 440 provided in each of the base units 430 in a distributed fashion, where FIG. 20A is a functional block diagram of the microprocessor 440 of the first group provided in the base unit 430 of the drug feeder 413 in the drug storage 411; and FIG. 20B is a functional block diagram of the microprocessor 440 of th