Module execution device and modularized program

A module execution device includes: a module execution section for executing at least one of a control module and a controlled module generated by execution of the control module; inter-module communication sections of a plurality of types for performing inter-module communication between the control module and the controlled module; and an inter-module communication section selection section for selecting one of the inter-module communication sections which is to be used for the inter-module communication. The module execution device is configured so that at least one of the control module and the controlled module instructs the inter-module communication section selection section to select said one of the inter-module communication sections based on inter-module communication control information given from the outside of the control module or the controlled module.