| 摘要 |
PURPOSE:To prevent the effect of noise in advance attended with the fluctuation or discontinuity of an impedance caused by the connection of equipments by allowing a device control terminal equipment receiving a control signal from a master station to reply an acknowledge immediately. CONSTITUTION:The master station 1 in receiving an operation input from a data input/output section 7 uses a processing section 8a to convert the input into a control signal 11, sets number N of times of transmission and makes a transmission/reception section 4a to send a control signal. On the other hand, in receiving the control signal sent from the master station 1 at transmission/ reception sections 4-1, 4-2, device control terminal equipments 2-1, 2-2 use processing sections 8-1, 8-2 to decode the data, compare its destination with the set value by address setting sections 10-1, 10-2 and send immediately the acknowledge from transmission/reception sections 4-1, 4-2 and send a device control signal to a control object equipment if no control signal is resent from the master station 1 regardless of waiting for a prescribed time.
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