Automation device

Abstract

The invention relates to an automation device ( 100, 100 ′), in which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device has a microcontroller ( 110 ), which is assigned at least one clock generator ( 120 ) and one memory unit ( 150 ), and which is connected at least to one data source ( 140 ), which is designed to output a data bit-stream to be transmitted.

1 . An automation device, with which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol, having a microcontroller, which is assigned at least one clock generator and one memory unit, and which is connected at least to one data sink, which is designed to accept a received data bit-stream, and to which is input an FSK-modulated line signal, characterized 
 in that an event-controlled counter is provided,    in that, at each zero crossover of the line signal, the counter reading of the counter is buffer-stored and the counter is restarted,    in that a data bit is output depending on the buffer-stored counter reading, and    in that, in order to process the counter, program execution of the microcontroller is interrupted by an interrupt request.