REPEATER CONNECTING TYPE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a repeater connecting type system where master slave communication about an operating state of a plurality of slave stations is conducted through optical signal transmission between a master station and the slave stations and that can reduce the installation cost and conduct stable operations. SOLUTION: A repeater 10 is provided between the master station 2 and each slave station 3. When each slave station 3 transmits state information to the repeater 10 on the basis of a monitor control instruction sent from the master station 2, the repeater 10 composites its own state information with the state information of each slave station 3 and transmits the composited information to the master station 2. Thus, the master station 2 can recognize the operating state of each slave station 3 or the repeater 10.