| 摘要 |
PURPOSE:To improve the reliability, by transmitting next slave station call control information only when a prescribed number of information words is received within a set response time in the system for transmission of slave station call control information and its indication and instrumentation information. CONSTITUTION:A response time, which is required for receiving indication and instrumentation information from a slave station 1 in a master station 5 for control information calling the slave station 1 from the master station 5, and a number of information words to be received are set as data in a memory part 13 in the unit of each slave station 1, and it is discriminated by a receiving data discriminating program storage device 11 whether the set number of words of indication and instrumentation information is received correctly from each slave station 1 continuously within the set response time or not. If the discrimination result is normal, information is set to a receiving data storage buffer 10, and the next slave station call control is executed. If it is abnormal, only the receiving signal is read and abandoned, and the call control for the next slave station 1 is executed. |
