Abstract: Information is backed up with a simple configuration. A control device that controls an object, the control device includes: a storage configured to store information controlling the object; and a change detector configured to detect that information in the storage is changed, in which the control device executes backup processing of the information stored in the storage when the change detector detects that the information in the storage is changed during operation.

Abstract: An information management system includes a storage unit configured to store a database including a bill of materials, a bill of process, and a bill of equipment. Each of the bills includes designation of an approver for included information. An information management system includes: a search module configured to search an item corresponding to a change content that is a content of a change from the database in response to generation of a change to a production site or generation of a change to be reflected in the production site, and search the approver of the searched item; an approval request module configured to request the searched approver to approve the reflection of the change content in the database; and an update module configured to reflect the change content in a corresponding item of the database in response to the approval from the approver.

Abstract: A control device can modify a first user program and first setting information in the storage unit executed by a control engine respectively using a second user program and second setting information received by the control device. A security engine of the control device verifies identity between the first user program and the second user program, evaluates the validity of setting indicated by the second setting information, and permits or prohibits performance of the above modification based on such a verification result and the evaluation.

Abstract: The present invention prevents unauthorized duplication of a control-related program stored in a control device. Provided is a control system equipped with a control device for executing a program related to control of a control target, and a security device capable of communicating with the control device. The security device includes a key storage part for storing a key and a decryption part for using a key to decrypt an encrypted program, and when a program is executed, carries out decryption thereon and transmits the decrypted program to the control device. The control device is equipped with a volatile storage part for storing the decrypted program transmitted from the security device.

Abstract: Information for addressing an incident depending on the incident is given. A control system includes a controller that performs a control operation for controlling an object to be controlled and a security component connected to the controller, the security component being responsible for a security function of the control system. The security component includes a collection module configured to collect state information indicating an operating state of the control system, a sensing module configured to sense an incident in the control system based on the collected state information, and a notification module configured to give information for addressing the sensed incident.

Abstract: A mold steel that is a steel having a composition containing, in terms of mass %: 0.07 to 0.15% of C; more than 0 and less than 0.8% of Si; more than 0 and not more than 1.0% of Mn; less than 0.05% of P; less than 0.02% of S; more than 0 and not more than 0.5% of Ni; more than 0 and less than 0.8% of Mo and W, either alone or as a complex (Mo+½W); more than 0 and less than 0.15% of V; and 0.25 to 1.5% of Cu, with the balance consisting of Fe, Cr and unavoidable impurities, wherein the content of Cr is more than 4.9% and not more than 5.3% and the hardness of the mold steel is 30 to 42 HRC.

Abstract: A mold steel that is a steel having a composition containing, in terms of mass %: 0.07 to 0.15% of C; more than 0 and less than 0.8% of Si; more than 0 and not more than 1.0% of Mn; less than 0.05% of P; less than 0.02% of S; more than 0 and not more than 0.5% of Ni; more than 0 and less than 0.8% of Mo and W, either alone or as a complex (Mo+1/2W); more than 0 and less than 0.15% of V; and 0.25 to 1.5% of Cu, with the balance consisting of Fe, Cr and unavoidable impurities, wherein the content of Cr is more than 4.9% and not more than 5.3% and the hardness of the mold steel is 30 to 42 HRC.