USR IOT USR-N540 User Manual

USR-N540 User Manual www.usriot.com
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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:

USR IOT USR-N540 Specifications

General

Brand	USR IOT
Model	USR-N540
Category	Server
Language	English