Introduction Of Network Basic Function; Ip Address / Subnet Mask / Gateway - Ebyte E830 Series User Manual

Ethernet switch quantity i/o controller, data acquisition module

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Chengdu Ebyte Electronic Technology Co., Ltd.

E830-DIO(ETH-2A) User Manual

3. Introduction of network basic function

1. The IP address is the identity of the module in the LAN. It is unique in the LAN and cannot be duplicated with other

devices on the same LAN.

The IP address of the E830-DIO(ETH-2A) is static IP and DHCP.

(1) static IP

Static IP need to be set manually by users, the IP, subnet mask, and gateway also need to be writen at the same time.

Static IP is suitable for scenarios where IP and devices need to be counted and one-to-one correspondence.

Advantages: Access to devices that cannot automatically allocate IP addresses can be searched through the full segment

broadcast mode.

Disadvantages: Different IP network segments in different LANs will not allow normal TCP/UDP communication.

(2) DHCP

The main function of DHCP is to obtain IP address, Gateway address, DNS server address, and other information from

the gateway host dynamics,

so as to avoid the tedious steps of setting up the IP address. It's suitable for those scenes

that no any requirement for IP and do not force IP to correspond with the module one by one.

Advantages: Access routers and other devices with DHCP Server can communicate directly.

Disadvantages: Access the network without DHCP Serve, such as the direct connection with computer,

E830-DIO(ETH-2A) won't work normally.

2. The subnet mask is used to determine the network number and host number of the IP address, showing the number of

subnet, determining whether the module is in the subnet. Subnet mask must be set up, what we usually use:

255.255.255.0, The network number is the first 24 digits, the host number is the last 8 digits, and there are 255 subnets. If

the module IP is within 255 ranges, the module IP is considered to be in this subnet.

3. Gateway refers to the network number of the module where the current IP address is located. If a device such as a

router is connected to an external network, the gateway is the router IP address. If the setting is incorrect, the external

network cannot be accessed properly. If you do not connect to the router, you do not need to set up the device.

4. Software configuration

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E830-dio