USR IOT USR-N540 - Modbus Polling

USR-N540 User Manual www.usriot.com
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3.5.4. Modbus Polling
USR-N540 support modbus polling function under TCP server mode. Set USR-N540 as Modbus Poll, support multiple
host polling to check parameter.
1. Multiple host polling is realized through virtual com.
① Set parameter of USR-N540 via web page, make sure to select Modbus TCP Poll and set time