CONTROL EQUIPMENT, MAINTENANCE DEVICE, INFORMATION PROCESSOR, AND MAINTENANCE SERVICE PROVIDING METHOD

摘要

PROBLEM TO BE SOLVED: To improve the security of technology information associated with equipment to be maintained.

SOLUTION: Control equipment 400a for controlling manipulated variables belonging to an object to be controlled is provided with an encryption setting data storing part 402 for storing the first encryption information of the target value of the manipulated variables, an equipment ID/encryption key storing part 401 for storing an encryption key to be used for decoding the encryption information of the equipment ID/encryption key storing part 401, and an arithmetic processing means 406 for outputting an instruction to be issued to the object to be controlled for making the manipulated variables close to the target value obtained by the decoding.

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