A device for signal transmission for application in industrial robots with at least two transmission modules intercommunicating over a transmission link is characterized by the transmission modules being linked by an addressable input module and by an addressable output module. Each of the transmission modules has a control logic which communicates with a transmit section and a receive section. The control logic controls the data transfer using time-division multiplexing with address generation. The input module and the output module are each linked over a parallel bus to one of the transmission modules.