COMMUNICATION SYSTEM IN CONTROL SYSTEM USING POWER CARRIER LINE

摘要

PURPOSE:To attain the communication at a minimum limited time by adding a check bit to a data sent simultaneously from a master station to all slave stations and sending a data added with the check bit at the transmission from a slave station to the master station to control a controlled device in on-line. CONSTITUTION:A data is outputted simultaneously from the master station to all the slave stations 51-5n. The data communication is confirmed by adding a check bit at the transmission from the slave stations 51-5n. The input data communication from the slave stations 51-5n is confirmed by adding a check bit to the data sent simultaneously from the master station 3 to all the slave stations 51-5n. As a result, the communication is attained by one transmission/ reception at each station. The communication station number in the slave stations 51-5n is informed to the master station 3 at the point of time when the communication is established, then the communication is attained with a communication establishing state in a minimum required time.