Internet of Things (IoT) is changing the processes in the manufacturing industry. It is creating new opportunities for both economies and society. The deployment of Internet of Things for the development of Industry 4.0 improves processes and manufacturing systems. In this type of systems, the information is related to the manufacturing status, trends in energy consumption by machinery, material logistics, customer orders, supply data and all data related to smart devices implemented in the processes. This paper describes an Internet of Things architecture applied to industry, a metamodel of integration in its phase II (Internet of things, social networks, cloud and industry 4.0) for the generation of applications for Industry 4.0.