A method for modifying a program of an industrial automation component, wherein the program includes a plurality of program elements, where the program is structured in units, a unit includes a group of program elements and can include both published program elements having an interface that can be referenced by the program elements of other units and unpublished program elements, and where a checksum is calculated and is assigned to the unit using the interfaces, such that if at least one program element of the version of the unit stored in the engineering system is modified, then the modified checksum is compared with the previous checksum version present in the automation component, and only the modified unit is transferred if the checksums match such that consistency of the program is maintained and the software updateable more quickly.

A method for modifying a program of an industrial automation component, wherein the program includes a plurality of program elements, where the program is structured in units, a unit includes a group of program elements and can include both published program elements having an interface that can be referenced by the program elements of other units and unpublished program elements, and where a checksum is calculated and is assigned to the unit using the interfaces, such that if at least one program element of the version of the unit stored in the engineering system is modified, then the modified checksum is compared with the previous checksum version present in the automation component, and only the modified unit is transferred if the checksums match such that consistency of the program is maintained and the software updateable more quickly.