| 摘要 |
PURPOSE:To simplify the circuit constitution of a transmission and reception section, by receiving all data transmitted from other communication devices, storing the data and eliminating the need for the detection of address coincidence and the transmission address setting. CONSTITUTION:A master station 2 and plural communication devices 3-1-3-n are connected to a transmission line 1, and the individual devices 3-1-3-n are provided with a transmission section 4a and a reception section 4b. A common memory 5 is connected to the sections 4a, 4b and the common memory 5 is provided with an area storing the data of the station and an area for the reception data storing the reception data from the devices 3-1-3-n. The data from the devices 3-1-3-n and the data of the station are stored, the transmission address setting the detection of the coincidence of the address are not required, and the circuit constitution of the transmission and reception section is simplified. |
