ID grant system, and ID assignment method

摘要

PROBLEM TO BE SOLVED: To suppress generation of a communication error and an incorrect action and provide IDs to slave units in a system composed of a master device and a plurality of slave devices.;SOLUTION: A plurality of CS 28 are connected to a BMU 14 at communication lines 52, 54, and are daisy chain connected at a power supply line 56. The BMU 14 has an ID provision control unit 58 which outputs an ID clear command and subsequently outputs different ID information after outputting the ID clear command. The CS 28 has a change-over switch 34, a memory 38 for storing IDs, and a memory control unit 36 which, operating on power provided by a power source input terminal PI, turns off the change-over switch 34 on condition that the ID clear command is accepted, and stores an ID in its own memory 38 on the basis of the supplied ID information and turns on the change-over switch 34 when no ID is allocated yet.;COPYRIGHT: (C)2013,JPO&INPIT