SYSTEM TO EXCHANGE DISCRETE INFORMATION Russian patent published in 1999 - IPC

FIELD: communication technology. SUBSTANCE: proposed system can be used for exchange of discrete information with large separation of its parts. It has master station, adjacent slave station, remote slave station, adjacent and remote sections of interface main line with data and control line and interrogation for servicing line and communication channel. System is inserted with first and second devices of corresponding make expanding interface main line. EFFECT: simplified and accelerated logic of exchange of data between sections of interface main line. 3 cl, 4 dwg