signal reception unit bus for two-wire bus as well as installation procedure of a two-wire bus.

摘要

signal reception unit bus (3, 13) for a bus with two wires (1, 2), in which users emitters bus (7, 8) generate bus signals by short-circuiting the bus voltage, said unit comprising bus signal receiving element supply bus (14, 15, 16) for generating the bus voltage with a voltage-current characteristic (16¿) falling in a defined manner in the event of short circuit thereof and signal evaluation (19) and an evaluation logic (21) that identify the short bus voltage as bus signals, characterized by detecting means (20) with a timing element to differentiate between bus signals and short bus, and a switching element / connection (15) for feeding member bus responsive to the detection means.