| 摘要 |
The present invention relates to a method for transmitting messages in an elevator group control apparatus wherein a plurality of elevator controllers and a separate group controller transmit data using a covalent bus line. The invention comprises the steps of (a) transmitting, through the serial communication bus line, a data transmission period and a data transmission star point of each elevator controller, which are determined in accordance with the number of elevator cars connected with the serial communication bus line by the group controller, to the corresponding elevator controller; and (b) receiving the data transmission period and the start point which are transmitted through the serial communication line from the group controller; and (c) storing the data transmission period.
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