| 摘要 |
A schedule data acquisition request unit (130) requests and acquires schedule data from a subsidiary controller (200). When a change has been made to the acquired schedule data, a schedule data update request unit (140) transmits the schedule data as changed to the subsidiary controller (200) and requests an update. A schedule data update processing unit (230) transmits, to a main controller (100), an acceptance notification in response to the update request, and writes the schedule data as changed into its own flash memory. On the other hand, the schedule data update request unit (140) displays, upon reception of a rejection notification from the subsidiary controller (200), an alarm message and the new schedule data on a screen. |
