What are the common problems of DTU connection

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         With the continuous advancement of the Internet of things , Industry 、 Environmental protection 、 energy 、 Sharing and other fields for DTU Equipment is more and more widely used , In the process of application ,DTU What are the common problems and solutions , The following analysis is made .

         First of all ,DTU How to connect with configuration software ？

         answer ： The advantage of the connection is , It can communicate without virtual serial port software , Configuration software program in the previous serial communication on the basis of no major changes , In remote control , Remote virtual serial communication , Remote transparent data transmission is widely used .

         When the connection is , commonly DTU、 Serial devices 、 And computers . According to the specific model DTU And configuration software , It needs to be configured correctly DTU Serial port parameters of , And the programming connection of configuration software , Virtual serial port selection and so on .

         second ,DTU How to connect to the relay , If the connection doesn't respond, what might be the cause ？

         answer ： Sometimes I meet , The computer ,DTU The device and the relay module are connected , Then send the command to the relay module does not respond to the situation .

         This situation depends on their own relay and purchased DTU Whether the serial port matches . Now on the market DTU Most of the serial ports are RS232/485.

         Third ,4G DTU Not even VPN What is the reason ？

         answer ： There are some 4G DTU It has its own routing function , Connect VPV The step is . Let's create... On the server first VPN Server. Turn on the server ( remote server ) Web connection page on , Click on “ file ”->“ New incoming connection ”, then , Choose to add an account , Please enter a user name , And passwords and so on .

         Fourth , How to achieve DTU Connect your own APP？

         answer ： It can be implemented through a dedicated cloud platform DTU Connect your own APP. Zhongshan Wulian is also dedicated to its own DTU Developed cloud transparent transmission , It can be realized by simple secondary development , Convenient and practical .

         The fifth ,DTU How to connect to the server ？

         answer ： In this case , The first thing to consider is whether the latest firmware is not updated . use USB After connecting to upgrade the latest firmware , Access to electricity , Restart the server