| 摘要 |
<p>PURPOSE:To improve the line utilizing efficiency by using a control line interface section to link a control line from a specific center station to all remote stations together via a transmission line through bus structure thereby accessing a remote station from the center station. CONSTITUTION:A transmission data (Tx) from a control signal 1 of a center station 7 is multiplexed by a multiplexer section 4 via a control line interface 2 and the result is sent to a transmission line 9. Each of the center station 7 and a remote station 81 or the like uses the multiplexer section 4 so as to demultiplex the transmission data (Tx) and the demultiplexed data is sent to a monitor control section 6 via the control line interface 2 to form the line for the transmission data (Tx). The control line interface 2 ORs between a reply data (A) from the monitor control section 6 and a reply data (B) from other station and gives a resulting reply data (C) to the multiplexer section 4 and gives a final reply data (Rx) to the control section 1 of the center station 7 through the line for the reply data (Rx) for each of the center station 7 and the remote station 81 or the like.</p> |
