| 摘要 |
PURPOSE:To enable a two-way communication between a base station and a slave equipment, to confirm data reception form a host device and also confirm the completion of the data transmission, to speedily and surely process data and stopping unnecessary transmission, and to easily arrange and connect a controller and the base station. CONSTITUTION:The controller 5 sends an idle signal through base stations 2a and 2b at regular intervals. On the basis of the idle signal, data transmission by a two-way communication is performed between the base stations 2a and 2b and radio slave equipments 3a-3c. Further, when data are transmitted and received, a confirmation answer is sent from a reception side to a transmission side. At this time, the radio slave equipments 3a-3c generate random numbers each time transmission is performed, and the transmission intervals of the radio slave equipments 3a-3c are dispersed by the random number processing to prevent the data from colliding against one another. |
