| 摘要 |
PURPOSE:To improve extensivity and efficiency, by providing a loop transmission line, bus transmission line, terminal station control mechanism, and loop transmitting and receiving circuit. CONSTITUTION:Received data from external equipment is received by equipment connection control mechanisms 10-1 and 10-2 and after format conversion, etc., the resulting data is sent out to the loop transmission line through a common signal bus 11, loop transmitting and receiving circuit 9, and loop connecting circuit 13. Data received from the loop transmission line, on the other hand, is supplied to the loop transmitting and receiving circuit 9 to judge which equipment connection control mechanism should receive the data and the data is then transferred to the corresponding equipment connection control mechanism through the common signal bus 11. The transferred data is further transferred to corresponding external mechanism under the control of each equipment connection control mechanism. In this case, the terminal station control mechanism 8 monitors and controls the equipment connection control mechanisms, transmitting and receiving circuit, etc. |
