1. A method for determining the spatial structure of a control system ( 2 ) with respect to the positions/positioning possibilities ( 4. 1 - 4. 4 ; 6. 1 - 6. 3 ) of system modules (S 1 -S 4 ), in which information on the spatial structure of a selected system module (S 1 ) is determined with respect to the position/positioning possibility of further system modules (S 2 -S 4 ), in that an information module (I 1 -I 4 ) which is respectively assigned to the system modules (S 1 -S 4 ) and which has information on the spatial structure of the respective system module (S 1 -S 4 ) is provided, and in that the information on the spatial structure of the selected system module (S 1 ) is interrogated via an interface ( 18 ) which is assigned to its information module (I 1 ), and is subsequently further processed.