| 摘要 |
PROBLEM TO BE SOLVED: To easily acquire actual physical arrangement states of respective stations, i.e., to which units the respective stations are mounted and which of the stations is arranged to a terminal end in a unit, and so forth.SOLUTION: A collecting frame 50 is transmitted via each station, and each station successively stores station information which includes station kind information expressing the station number of a self station and whether the station is a slave station or not, and status information expressing whether the station is one arranged at the terminal end in the unit U in the collecting frame 50 (steps S1-S3). The master station "1" refers to the collecting frame 50 which has passed through each station so as to obtain from the station information the connection order and station number of each station whether the station is the slave station or not, and whether the station is one arranged at the terminal end to determine that all the stations from the next station of the station arranged at the terminal end to the station before the station arranged at the next terminal end are those mounted to the same units U to obtain which stations are mounted on which units U and which stations are arranged at the terminal ends, and then, to obtain physical arrangement states of the respective stations (steps S4-S6). |
