To allow confirmation of a condition in which an instruction signal for operation is outputted from a management device or not by easy work.

In a power supply condition, the management device 5 for managing operation of an article handling device is constituted to transmit the instruction signal for operation to the article handling device through a communication connector every time when set time elapses. A communication checker 18 for confirming communication capable of transmitting and receiving a signal between the management device 5 and it through the communication connector 17 in a connection condition in which it is connected with the communication connector 17 of the management device 5 while it is freely connected with the communication connector 17 is provided. While the communication checker 18 is connected with the communication connector 17 of the management device 5, the communication checker 18 determines whether the instruction signal for operation is outputted from the management device 5 or not and transmits a determination result signal based on the result of determination to the management device 5.