| 摘要 |
PURPOSE:To operate another station as a monitoring station even when a fault is generated at the monitoring station to manage/monitor a communication bus among plural stations arranged on a communication bus system concerning the fault control system for the communication bus in a multiprocessor system connected by the duplexed ringular communication buses. CONSTITUTION:Plural stations 7a and 7b-7n are arranged on one communication bus 11 so as to be connected to respective processors and to be controlled from the respective processors. The plural stations are composed of one monitoring station equipped with the monitoring/managing function of the communication bus 11 and the other general stations. When the fault is generated at the monitoring station and the fault generation is informed from the corresponding processor, the managing processor activates a monitoring station control processor changing means 2a and selects the general station to replace the current monitoring station, an instruction in issued to change the processor for controlling the selected station into the processor for controlling the monitoring station, and the instructed processor sets the operation mode of the connected station to the monitoring station. |
