Control System Program Transmission Device Authentication Server Program Protection Method Program Transmission Method And Program For Program Transmission Device

Abstract: The objective is to provide a control system which safely protects a control program and with respect to a specific user increases convenience of reading of an execution use control program from a PLC and writing of an execution use control program to the PLC. The control system is provided with: a controller (300) which controls a production apparatus (500); a development use computer (200) which converts a control program in which control of the production apparatus (500) is described to an execution use control program which is capable of being executed at the controller (300) encrypts the program and generates an editing use key for editing use and an execution use key for execution use; and a management server (100) which manages information of the user. The development use computer (200) registers the editing use key in a user management table (101) of the management server (100) and transmits the execution use key and the execution use control program to the controller (300).

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