Traditional manufacturing systems were static, rigid and disconnected and they were designed for mass production with low flexibility. Those systems had predefined schedules and fixed processing speed. Therefore, they were not able to adapt in real time data which leads to unbalanced workflows, excess inventory. With the fourth industrial revolution, new manufacturing systems, especially Smart Manufacturing systems, can respond fast to global competitiveness and customization. Smart manufacturing systems gather real-time data with improvement in decision making, increasing efficiency and performance and total production. By emerging Digital Twin, it is considered as a core component in smart manufacturing. Digital Twin through the virtual component of physical assets, is updating the systems based on real-time data.