| 摘要 |
<p>PURPOSE:To simplify a control procedure between devices and to execute control in a host time by adding timer information for synchronization to a control instruction. CONSTITUTION:The control instruction A is the control instruction with timer and the instruction A consists of (a)-(c) parts. The (a) part is the instruction which interrupts a line which is used at present, the (b) part is a timer part and time information of the timer part is for synchronizing line switching. The (c) part is the instruction which actually controls a switching operation. Consequently, respective slave stations 1 and 2 synchronize line switching in correspondence with time information of the timer part (b) and they actually execute the switching operation by the switching instruction of the (c) part. Thus, respective slave stations 1 and 2 execute control in accordance with time information of the timer part and furthermore the control procedure required for other synchronization can be omitted.</p> |
