| 摘要 |
PURPOSE:To constiute a device used for wide applications by providing a memory area stored with same data to a master station and plural slave stations connected to a data transmission line so as to allow each slave station to use data of other slave stations. CONSTITUTION:One master station 1 and plural slave stations 2-4 are connected to a data transmission line 8. The master station 1 is provided with memory areas 5-7 corresponding to the slave stations 2-4, and the slave stations 2-4 are provided with slave station memory areas 6, 7 in addition to a memory 5 for master station. For example, even when a data is given to a transmission line between the master station 1 and the slave station 2 and transmitted/received, and other stations 3, 4 store the data to the memory areas 5-7 corresponding to the sender address. Thus, it is possible for each slave station to use the data of the other slave stations and the device with wide applications is constituted.
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