Communication method null highest priority in ru - punetsutowa -

摘要

PURPOSE:To prevent the reduction in the transmission efficiency of a instantaneous system communication by sending a data when a significant signal to be sent exists at the period while a trigger station ends the 2nd trigger signal and not sending the data when not in existence. CONSTITUTION:When a node station 1 acquires always the transmission right with the highest priority at the start point of time of a multi-period and node stations 3, 4 desire the transmission with the highest priority, the trigger station 5 sends a trigger signal TG1 representing the start of the 1st period of the multi-period and polling the communication with the highest priority, then only the node station 1 acquiring already the right of transmission sends a packet signal S1. When the significant data to be sent exists, it is processed into a packet and the result is sent as the packet signal S1, and even when no significant data to be sent exists, a packet signal is sent to the transmission line 6 to ensure the transmission right with the highest priority. Thus, the communication of the instantaneous system is accommodated efficiently.