The invention relates to the technical field of an
industrial control system and particularly relates to a control program organization structure of the
control system and a download method. The
control system comprises a controller and configuration
software, wherein the controller is internally provided with an operation management core in a solidification mode, a background
system of the configuration
software is stored with a program module
database, the program module
database is stored in the configuration
software in an encrypted linkable file mode, the foreground of the configuration software realizes
programming and download of user configuration programs carried out by users, the operation management core, the program module
database, the user configuration programs and data sets form a control program, and communication and interaction of the control program between the controller and the configuration software is carried out through a download interface. The
control system is advantaged in that the control program module database is stored in the background of the configuration software, control program modules actually utilized by the configuration program are downloaded to store in the controller only after download, not only can the
program structure of the controller is simplified, program scheduling and management are made to realize more rapid and reliable, but also storage resource pressure of the controller is further reduced.