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Chapter 4 Product function
4.1 Basic parameters of this machine
4.1.1 Basic parameters
SN code is the traceability code written when the equipment leaves the factory, highlighting the
batch number of the equipment leaving the factory, which can only be read, not written.
The equipment model is the full name of the current equipment model, and the information can
be obtained from official website through this model.
The firmware version is the factory firmware model of the current device, and the latest
firmware update can be downloaded from official website.
The MAC address is the physical address of the chip and is the unique identification code.
4.1.2 IP Address Type
IP address is the identification of modules in LAN, which is unique in LAN. Therefore, it
cannot be duplicated with other devices in the same LAN. There are two ways to obtain the IP
address of the module: static IP and DHCP.
（1） Static IP: Static IP needs to be set manually by users. In the process of setting, pay attention
to writing IP, Subnet mask and gateway at the same time. Static IP is suitable for scenarios
where IP and devices need statistics and one-to-one correspondence.
The invention has the advantages that all devices accessing which cannot allocate IP addresses
can search for through the broadcast mode of the whole network segment, which is convenient for
unified management of;
Disadvantages: Different LAN segments are different, resulting in normal TCP/UDP
communication.
（2） Dynamic DHCP: The main function of DHCP is to dynamically obtain IP address, gateway
address, DNS server address and other information from gateway host, thus avoiding the tedious
steps of setting IP address. It is suitable for scenarios where there is no requirement for IP and
one-to-one correspondence between IP and modules.
Advantages: Access routers and other devices with DHCP Server can communicate directly,
reducing the trouble of setting IP address gateway and subnet mask.
Disadvantages: Access to a network without DHCP Serve, such as direct connection to a
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NE2-D11/NE2-D12 User Manual
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