USR-N540 User Manual www.usriot.com
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③ Open modbus slave software, choose the serial port which connected with USR-N540. Run modbus Poll
software and make port-forwarding with this serial port.
④ The value of modbus poll will also be changed when you revise the value of modbus slave.
2. Conduct Modbus Polling through Modbus TCP to Modbus RTU
① Set USR-N540 via software, select Modbus TCP