Abstract: A server that is a program providing device includes: a provision processing unit that provides a program part constituting a control program being a program to be executed in a controller; an authentication unit that authenticates an operation simulation module being a program for simulatively performing operation in accordance with the program part on a basis of a result of verification on whether or not the operation simulation module can simulate operation of the controller to be performed by execution of the program part; and an operation checking unit that checks operation of the program part by using the authenticated operation simulation module.

Abstract: A server that is a program providing device includes: a provision processing unit that provides a program part constituting a control program being a program to be executed in a controller; an authentication unit that authenticates an operation simulation module being a program for simulatively performing operation in accordance with the program part on a basis of a result of verification on whether or not the operation simulation module can simulate operation of the controller to be performed by execution of the program part; and an operation checking unit that checks operation of the program part by using the authenticated operation simulation module.

Abstract: A maintenance assistance device includes a database in which maintenance assistance data is entered, an information obtaining unit to obtain, from a production facility, problem identification information indicating a problem having occurred in the production facility, an information retrieval unit to retrieve, from a plurality of pieces of maintenance assistance data entered in the database, maintenance assistance data corresponding to problem identification information obtained by the information obtaining unit, and a display control unit to display, on a display unit, a measure-taking method for a problem indicated by problem identification information obtained by the information obtaining unit, and a location of problem-causing factor, the location being the position of a target component on which the measure-taking method is implemented in the production facility, on the basis of maintenance assistance data retrieved by the information retrieval unit.