Domestic appliance control , comprising: - a data transmission bus having a signal line , - a safety enabling circuit having an input and an output , - wherein the input is connected to the signal line , and - wherein the safety enabling circuit is configured to output a blocking signal at the output if a signal unchanging in time is applied to the input , and - a first bus participant , - wherein the first bus participant has an input/output port , - wherein the input/output port is connected to the signal line , - wherein the input/output port is an open-drain port or an open-collector port which has a first state, in which the input/output port is connected with low impedance to a reference potential, and which has a second high impedance state, and - wherein the first bus participant is configured to monitor a signal applied to the signal line and to transfer the input/output port thereof to the first state to prevent a signal changing in time on the signal line if the signal applied to the signal line has a not intended temporal course. - a data transmission bus having a signal line , - a safety enabling circuit having an input and an output , - wherein the input is connected to the signal line , and - wherein the safety enabling circuit is configured to output a blocking signal at the output if a signal unchanging in time is applied to the input , and - wherein the input is connected to the signal line , and - wherein the safety enabling circuit is configured to output a blocking signal at the output if a signal unchanging in time is applied to the input , and - a first bus participant , - wherein the first bus participant has an input/output port , - wherein the input/output port is connected to the signal line , - wherein the input/output port is an open-drain port or an open-collector port which has a first state, in which the input/output port is connected with low impedance to a reference potential, and which has a second high impedance state, and - wherein the first bus participant is configured to monitor a signal applied to the signal line and to transfer the input/output port thereof to the first state to prevent a signal changing in time on the signal line if the signal applied to the signal line has a not intended temporal course. - wherein the first bus participant has an input/output port , - wherein the input/output port is connected to the signal line , - wherein the input/output port is an open-drain port or an open-collector port which has a first state, in which the input/output port is connected with low impedance to a reference potential, and which has a second high impedance state, and - wherein the input/output port is connected to the signal line , - wherein the input/output port is an open-drain port or an open-collector port which has a first state, in which the input/output port is connected with low impedance to a reference potential, and which has a second high impedance state, and - wherein the first bus participant is configured to monitor a signal applied to the signal line and to transfer the input/output port thereof to the first state to prevent a signal changing in time on the signal line if the signal applied to the signal line has a not intended temporal course. <EOS>