Wireless modbus system based on Lora technology
A wireless and technical technology, applied in the field of wireless communication network, can solve problems such as difficulties, achieve the effect of avoiding interference, solving wiring difficulties, and reducing security risks
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[0020] The invention consists of a Lora to modbus concentrator (AP), a Lora to modbus node (ED) and upper computer software. On the physical wiring, the AP is connected to the master on the traditional RS485 bus, and the ED is connected to the slave on the traditional RS485 bus. AP and ED form a wireless star network through self-organization to replace the original RS485 wired star network. The application layer protocol still retains the user's original modbus protocol unchanged. At the wireless network level, data transmission is carried out in the Lora modulation mode through the wireless private protocol, and the addressing is performed according to the modbus address through the adaptive learning mechanism, and the information is sent to the AP or ED in a transparent transmission manner.
[0021] figure 1 A schematic diagram of the hardware interface of the AP or ED device 100 that facilitates the use of the present invention is shown, and the hardware interfaces of ...
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