PROBLEM TO BE SOLVED: To provide an engineering device which can be operated while work contents performed by other operators are confirmed, and also which can improve work efficiency by reducing the effort and time as well as the number of man-hours resulting from communication errors among operators as much as possible.SOLUTION: An engineering device includes: a log-in management table creation unit 12 for creating a log-in management table; an operation log management file creation unit 16 for creating an operation log management file in which information on operation contents is recorded; a log-in history determination unit 14 for determining the presence of a log-in history created by other operators after the operator currently logging in; and an operation history display control unit 15 for creating a file for operation history display for displaying the contents of operations performed by other operators after the operator is currently logging in.SELECTED DRAWING: Figure 1
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