| 摘要 |
PROBLEM TO BE SOLVED: To provide a fault section judging system without needing any complicated processing. SOLUTION: When alarm information is received from a certain slave station, a master station 1 transmits an instruction 100 for simultaneously freezing transmitting information to the respective slave stations 2-4. The respective slave stations 2-4 temporarily store transmitting information in transmission buffers 23, 33 and 43 by the instruction 100. Then, the master station 1 successively collects information from the whole slave stations from the first slave station 1 being the most close thereto by polling. A fault occurrence section is judged based on collected information. |
