A digital manufacturing system includes a web portal to receive product configuration information. An enterprise resource planning subsystem generates a production order based on the product configuration information, and determines a manufacturing resource plan and production steps for manufacturing the product. A manufacturing execution subsystem generates an identifier for the manufacturing resource plan, and communicate the manufacturing resource plan and the production steps to a production control subsystem controlling machines performing the manufacturing of the product according to the manufacturing resource plan and the production steps. A production control subsystem stores the identifier in a near field communication chip attachable to the product during the manufacturing to provide real-time tracking of the manufacturing throughout the steps. An empirical analysis subsystem connects to different social media applications to determine sentiment of the manufactured product.

A ladder-program managing device includes: a database that has a ladder-program-storing region in which ladder program for individually controlling a plurality of pieces of machinery are stored, and that contains ladder-program-history information storing, in association with each other, identification information for identifying contents of alterations that have already been applied to the plurality of pieces of machinery and correction programs required to perform the alterations; and a database managing portion that manages the database, wherein the database managing portion is provided with an identification-information-searching portion that searches for, in the ladder-program-history information, identification information corresponding to an alteration content to be applied to an alteration-target machinery, and a merging portion that identifies the correction program corresponding to the searched identification information in the ladder-program-history information, and that merges the correction program with the ladder program for the alteration-target machinery.

A digital manufacturing system includes a web portal to receive product configuration information. An enterprise resource planning subsystem generates a production order based on the product configuration information, and determines a manufacturing resource plan and production steps for manufacturing the product.

A manufacturing execution subsystem generates an identifier for the manufacturing resource plan, and communicate the manufacturing resource plan and the production steps to a production control subsystem controlling machines performing the manufacturing of the product according to the manufacturing resource plan and the production steps. A production control subsystem stores the identifier in a near field communication chip attachable to the product during the manufacturing to provide real-time tracking of the manufacturing throughout the steps. An empirical analysis subsystem connects to different social media applications to determine sentiment of the manufactured product.

A ladder-program managing device includes: a database that has a ladder-program-storing region in which ladder program for individually controlling a plurality of pieces of machinery are stored, and that contains ladder-program-history information storing, in association with each other, identification information for identifying contents of alterations that have already been applied to the plurality of pieces of machinery and correction programs required to perform the alterations; and a database managing portion that manages the database, wherein the database managing portion is provided with an identification-information-searching portion that searches for, in the ladder-program-history information, identification information corresponding to an alteration content to be applied to an alteration-target machinery, and a merging portion that identifies the correction program corresponding to the searched identification information in the ladder-program-history information, and that merges the correction program with the ladder program for the alteration-target machinery.