Transmission line address overlap detection method and the slave station terminal used in the system

Control and monitoring employing the transmission synchronization method for transmitting data through a common data signal line to synchronize the plurality of slave stations corresponding to the connected master station and a plurality of controlled devices into a single control unit with a transmission clock providing a slave station terminal used as the transmission line address overlap detection method capable of accurately detecting the disconnection of the transmission line in the signal transmission system to the system. A series of pulse-like signals outputted from the master station to the common data signal line differs from the configured control and monitoring data area in the data of the data and the supervisory data signal of the control data signal is composed of a plurality of pulsed signals the management data area provided that, slave station, the random number data generated in the local station to the original number, a comparison reference data consisting of a plurality of bits of data based on the original number of multiple product, comprising a plurality of comparison and collation data superimposing a signal to the management data area, the master station determines whether the address duplication in a plurality of slave stations based on the result of a plurality of the comparison and collation data comparison according to a predetermined arrangement.