COMMUNICATION SEQUENCE DECISION METHOD AND COMMUNICATION SYSTEM USING THE COMMUNICATION SEQUENCE DECISION METHOD

摘要

PROBLEM TO BE SOLVED: To reduce man-hours for an installation work by allowing a 1st kind transmission slave set to make polling communication with a transmission master set and allowing a 2nd kind transmission slave set to return a signal to the transmission master set only when a return number included in a return request transmission received from the transmission master set is coincident with its own return order number. ;SOLUTION: A transmission master set 1 performs polling communication with lighting devices 3, 3, monitors a communication line L₁ to confirm the presence of an interruption signal from wireless receivers 5-7. Upon the receipt of a remote control signal from a remote control transmitter 8, the wireless receivers 5-7 sends an interrupt signal to the communication line L₁. When the transmission master set 1 detects an interrupt signal not from the lighting devices 3, 3, the master set 1 sends a return request signal including information of a return number Y and denoting a request of return of operation data to the receivers 5-7 through the communication line L₁. An interruption device among all transmission slave sets 2 sets a return sequence number X and returns the signal when the value X is matched with a return number Y of the return request transmission to be received.;COPYRIGHT: (C)1999,JPO