Patent ID: 7912990

Claim:
A method for safe or reliable parameterization in accordance with IEC 61508 SIL 3 or EN 954-1 Category 4 of an electronic appliance, the method comprising: acquiring parameter values which are intended for parameterization and having been selected or entered via a user interface of an electronic control device; subsequently transmitting the selected or entered parameter values to the electronic appliance; keeping the selected or entered parameter values in at least one memory, which can be accessed by the control device; and reading back the selected or entered parameter values at least once from the at least one memory for verification of the safe parameterization; wherein conversion of a parameter set of parameter values to be transferred from the representation in a memory to a bit-by-bit successive representation of the parameter values, as required for transmission of the parameter set, in a sequence of bytes, comprises conversion using at least two different methods and checking that the resultant byte sequences and their checksums are the same.