USR-N540 User Manual www.usriot.com
Jinan USR IOT Technology Limited 31 / 73 [email protected]
6.
Click OK once configuration finished, update the data of modbus slave and modbus data will also be updated.
3.5.3.
Modbus Active Query Function
Modbus active query function can be realized through the serial heartbeat packet function of USR-N540.
1.
Open serial heartbeat packet function via web page, query command is heartbeat packet data, example: