Automation-technical device for providing communication between functional units, has microcontroller, decision maker evaluating time between successive zero crossings, and output stage outputting data bit stream based on determined time

摘要

The device has a clock generator and a memory unit that are assigned to a micro controller connected to a data sink. A ladder network has a zero-crossing detector (182) detecting zero crossing of a line signal e.g. FSK-signal (201). A timer (183) determines a time between two successive zero crossings and a decision maker (184) evaluates time. An output stage (185) outputs a data bit stream based on the determined time, where the network is connected between a communication line and a controller.