USRIOT USR-N520, User Manual, Page: 32 / 69

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polling command which might lead to conflict between command circle and polling time.
3.5. Value-added Functions
3.5.1. DHCP
DHCP is obtaining IP address automatically. USR-N520 IP obtaining have 2 types: DHCP and static IP. It is
static IP192.168.0.7 by default.
DHCP is effective after change to DHCP and restart. When USR-N520 connects to router or device
assigning IP, it require IP address from host within network, which takes about 5-15 seconds.Then you can
search N520’s IP address. It is convenient for setting different IP address in different environment.
<Note> Don’t set DHCP when USR-N520 connected to PC directly because generally PC don't have the
ability of assigning IP. Otherwise, USR-N520 cannot transmit data normally, but wait for IP.
3.5.2. DNS
USR-N520 access the domain name or dynamic domain name when work under Client mode. The length
of domain name must be less than 30 bytes .USR-N520 will analysis the domain name constantly if cannot
connect to destination server.
When server’s IP address is dynamics, DNS make USR-N520 ’ parameter no changes if according IP
doesn't change no matter how server IP address changes.
3.5.3. Self-Defined Heartbeat Function
USR-N520 supports heartbeat function. Heartbeat is divided into network heartbeat and serial port
heartbeat.
1
Set Network heartbeat through web page