| 摘要 |
PURPOSE:To quickly change a program and to reduce the cost of this change by rewriting the program of a microcomputer in each terminal station by a master station and saving the labor and time to patrol respective terminal stations and replace the memories. CONSTITUTION:In the multichannel access system for radio communication system, plural terminal stations are provided with EEPROMs 2 and 4 for control program whose capacity is at least twice as large as the program capacity. When the control program in terminal stations is changed, terminal stations are called by the master station, and a new program is transmitted, and the old program is switched to the new program after check of transmission error, sum error, or the like, and the normal operation is restored. Thus, the time and the cost required for the change of the control program are considerably reduced because the control program in signal control parts of all terminal stations is changed without patrolling respective terminal stations.
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