| 摘要 |
Obtained is a remote update system for an elevator control program, which is capable of sequentially realizing update of control programs of a plurality of elevators with reduced communication time and costs without stopping the plurality of elevators at the same time. A server 10 delivers to a representative elevator 30(1) update data including differential information between the control program of a version before update and the control program of the latest version to be updated to through a communication line 20, and the representative elevator 30(1) and other elevators 30(2) to 30(N) sequentially transfer the update data according to a predetermined transfer order, and update their own control programs based on the update data including the differential data.
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