Reconfigurable Manufacturing System (RMS) appeared as a solution to high variation in customer demands allowing manufacturers to satisfy different amount of demands in each single period. In RMS, the system satisfies demands by reconfiguring the machines exactly when and where needed by adding and removing machines whose number depends on the demand of every single period. The reconfiguration process brings a critical issue within the RMS that is called as reconfiguration planning (RP) problems in this paper. However, with the rise of Internet of Things (IoT) that has been a global issue, many companies or manufacturers are trying to integrate it into their smart systems. RMS as well needs to apply IoT in order to establish the internetworking between machines and the logic, so that RP problems can be solved, automated, and controlled. This paper addresses the importance of the integration of IoT into RMS and the development of mathematical model to solve RP problems in order to save reconfiguration time, cost, and effort. The contribution of the proposed idea is evaluated by using simulation software.