Networking method between DTU and central platform
Depending on whether and how the central platform can access the Internet, DTU and the central platform have the following networking methods:
1. DTU – cloud platform/cloud server

Working method: DTU is directly connected to the cloud platform/cloud server for data interaction. Customers can directly log in to the cloud platform/cloud server through their account to query the required data.
Other requirements: You can view data information at a specific time; you can manually send instructions to the lower computer to make it send data.
Application scenarios: 1. It is convenient and fast to use our cloud platform, and the project progress is fast; 2. It has its own server to process data.
2. DTU——PC terminal

Working method: DTU and PC terminals are connected to the cloud platform for mapping, and then two-way communication is realized to send data to each other.
Other requirements: It can test whether the bilateral link is normal (that is, the platform can actively send data to the terminal); it can view data records; it can realize two-way fully transparent transmission.
Application scenarios: 1. There is no fixed IP to build a data center; 2. On-site deployment far away from the monitoring center.
3. DTU——DTU

Working method: Two DTUs are connected to the cloud platform respectively, and forward each other through the platform to achieve end-to-end communication.
Other requirements: Many-to-one forwarding can be selected; data records can be viewed; two-way fully transparent transmission can be achieved.
Application scenarios: 1. The terminal at the main center cannot connect to the external network; 2. There are not many clients, or end-to-end communication needs to be achieved.
DTU-Anwendungsszenarien
DTU is mainly used in industrial Internet of Things automation projects, water conservancy, electric power, environmental monitoring, automobile production, logistics and transportation, hydrology and meteorology and other industries. Although the industries in which DTU is applied are different, the principles of its application are similar. Most of them connect the DTU to industry equipment, such as sensors, PLCs and other automation products, and then build wireless network communication connections with the cloud platform. As the Internet continues to develop rapidly, DTU is used more and more widely. It provides help for data information and industrial integration in various industries and between industries, and has gradually developed into a key core technology of the Internet of Things.