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both published program elements having an interface that can be referenced by the program elements of other units and unpublished program elements, and where a checksum is calculated and is assigned to the unit using the interfaces, such that if at least one program element of the version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.

In production management systems, management devices includes a management device of a pre-process which adds a hash value of a production condition information received from a preceding process and a hash value calculated from the production condition information of the pre-process to calculate a first hash value and transmit the production condition information of the pre-process and the first hash value to a management device of a current process, and the management devices includes a management device of a current process which calculates a second hash value from production condition information received, calculates a third hash value obtained by subtracting the second hash value from the first hash value.

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both published program elements having an interface that can be referenced by the program elements of other units and unpublished program elements, and where a checksum is calculated and is assigned to the unit using the interfaces, such that if at least one program element of the version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.

In production management systems, management devices includes a management device of a pre-process which adds a hash value of a production condition information received from a preceding process and a hash value calculated from the production condition information of the pre-process to calculate a first hash value and transmit the production condition information of the pre-process and the first hash value to a management device of a current process, and the management devices includes a management device of a current process which calculates a second hash value from production condition information received, calculates a third hash value obtained by subtracting the second hash value from the first hash value.