Method for predicting the compatibility of assemblies for a functional unit of a field device

An automated method for predicting compatibility of assemblies for an electrical, electronic or mechatronic functional unit of a field device of automation technology, wherein the functional unit is composed of at least a first electrical or electronic or mechanical assembly and at least a second electrical or electronic assembly, wherein the functional unit is defined by a plurality of functional parameters and wherein at least some of the functional parameters have a predetermined specification as a function of a particular application of the functional unit and/or of the field device, and, thus, lie within a predetermined value range, wherein the method comprises method steps as follows:

• identifying first assemblies, which fulfill a first function within the functional unit, wherein each of the first assemblies has a plurality of first physical parameters, wherein the first physical parameters of the first assembly differ as regards their positions within predetermined first tolerance bands;
• identifying second assemblies, which perform a second function within the functional unit, wherein each of the second assemblies has a plurality of second physical parameters, wherein the second parameters of the second assembly differ as regards their positions within predetermined second tolerance bands;
• using stored data, which rest on measured values or empirical values for the first parameters of the first assemblies and for the second parameters of the second assemblies or for subcomponents of the first or the second assembly or for parameters of different combinations of first assemblies and second assemblies, selecting at least one combination of a first assembly and a second assembly, which fulfills the predetermined specifications of the functional parameters of the functional unit with a high probability.