Abstract: To provide a method for configuring a field device, and a corresponding parameterization system, that enables secure transfer of parameter values via a potentially unsafe data link the method establishes a data link (3) between the field device and a parameterization unit, a parameterization value is transmitted by the parameterization unit to the field device, a parameterization value is received by the field device. Furthermore, a first test value is generated by the parameterization unit from the parameterization value, a second test value is generated by the field device from the received parameterization value. Then, the test values are compared to one another.

Abstract: To provide a method for configuring a field device, and a corresponding parameterization system, that enables secure transfer of parameter values via a potentially unsafe data link the method establishes a data link (3) between the field device and a parameterization unit, a parameterization value is transmitted by the parameterization unit to the field device, a parameterization value is received by the field device. Furthermore, a first test value is generated by the parameterization unit from the parameterization value, a second test value is generated by the field device from the received parameterization value. Then, the test values are compared to one another.

Abstract: A method for configuring a field device (1), a corresponding field device and a corresponding parameterization system provide for the secure transfer of parameter values via a potentially unsafe data link by a control value that is dependent on at least one parameter value of the field device being determined and an output signal is generated. The output signal is output as a current signal via an interface (2) of the field device (1).

Abstract: A method for transmitting data packets from a data source to a data sink with highest possible security in an energy efficient manner is obtained by at least two data packets are sent from the at least one data source to the at least one data sink, at least one of the at least two transmitted data packets being free of a single test value, the at least two data packets being sent from the at least one data source to the at least one data sink such that each of the at least two data packets received by the at least one data sink can be processed thereby essentially immediately after the reception of each data packet, and an overall test value for verifying integrity of a pre-defined number of associated data packets being transmitted to the at least one data sink from the at least one data source.