USR-N540 User Manual www.usriot.com
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Query/set heartbeat package sending time
4.2.3. Enter AT Command Mode
① Send +++ to USR-N540 through serial port by test program
② USR-N540 return ‘a’
③ Need reply “a” within 3s once received previous ‘a’
④ Return+ok to enter AT command mode
5. Parameter Configuration
It is setup software configuration, webpage configuration and serial configuration.
How to configure:
Revise user name/password→set IP access method→serial parameter→USR-N540 work mode→work mode
related parameter
5.1. Software Configuration
To make sure setup software normal running, please check the below firstly:
1. USR-N540 and setup software PC are within same LAN.
2. Disable the anti-virus software and firewall on PC.
3. Disable network card nothing to do with this testing.
Download [USR-TCP232-M4&E45] Setup software here:
https://www.usriot.com/support/downloads/usr-vcom-virtual-serial-software.html
Search device and all USR-N540 device within LAN can be found. It includes IP, name, MAC and version.