PROCESS FOR THE LOW-ENERGY INTERROGATION OF BINARY STATES OVER LONG LINES

摘要

A process for the low-energy interrogation of binary states over long lines (5) by means of a monitoring circuit (4). The latter is connected via a bus coupling circuit (2) to bus lines (1) of a bus system for energy and information transmission in a building system. A long line (5) is charged with low-energy pulses of one polarity with respect to reference potential as long as a connected actor or sensor (component (6)) has a high voltage or is open. The potential of the long line (5) is discharged via the actor or sensor (component (6)) when the latter is at a low voltage or is closed.