Multifunctional serial to Ethernet module user manual http://en.usr.cn
Jinan USR IOT Technology Co., Ltd tec@usr.cn
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Here, the usement and function is presented below.
Selection None, that indicate we are using Transparent mode, no protocol convertion.
Selection ModbusTCP, means we use protocol convertion from Modbus RTU to
ModbusTCP.
In the comm side(RS232 or RS485), it's ModbusRTU protocol , the ethernet side is
ModbusTCP.
The ethernet side must be a Master, who send query frame first, and the Modbus RTU device
respond with data to the command.
The function acts as below.
PC
TCP 232
-
401
User Device
ModbusRTU to ModbusTCP
ModbusRTU ModbusTCP
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