| 摘要 |
A controller includes an authentication unit, an operator information database, an operation unit, a plant control logic processor and an operation history database. The authentication unit performs authentication when the operator in touch with the touch electrode inputs an operation to the operation unit. The operation unit obtains operator information of an operator authenticated by the authentication unit, and records an operation history of an operation input to an operation unit by the operator in the operation history database in relation to the operator information. |
