| 摘要 |
PURPOSE:To transmit simultaneously same data to plural specific stations by constituting that each bit of an address section can designates each of a slave station, and discriminating whether or not the own station is selected depending in the set state of the bit of an address section by an address comparison circuit provided to each slave station. CONSTITUTION:A transmission equipment is constituted by connecting plural slave stations (h-j) to a master station (g) and each slave station (h-j) is provided with an address section comparing circuit. Each bit of an address of the slave stations (h-j) is constituted so as to be corresponded to each station and its address section is constituted so that the designation of each slave station is attained. Then, a bit number corresponding to the address of the own station is set to 1 by an output at each bit corresponding to the own address by address sets ASET1-ASET8 of the comparison circuit of each slave station (h-j), the logic of the receiving address of the ASET1-ASET8 and the content of the address section from the transmission line is obtained by an AND gate 24 and the OR logic of an OR gate 25 of the output, allowing to discriminate the selection of the own station. |
