
Chapter 3: Installation and Initial Setup
Figure 3-18. Network Setttings screen (DHCP selected).
NOTE: To see the rest of the information for Class D listed below that is cut off in Figure
b. The default network configuration is to receive an IP address assignment from a DHCP server. DHCP controls whether or not a DHCP server is used to set the IP address, subnet mask, and default gateway of the Modbus Hardened Serial Server. When the DHCP option is enabled but the DHCP server is not found, the Modbus Hardened Serial Server will automatically configure IP address 169.254.102.39 with a subnet mask 255.255.0.0.
c. To configure your Modbus Hardened Serial Server without using a DHCP Server, uncheck the “I want DHCP to setup the network” box. You will need to know the IP Address, Subnet Mask, and Default Gateway.
The IP Address field contains the static internet protocol address of the Modbus Hardened Serial Server.
Subnet Mask field contains the mask that is used to define the sub-network.
For a Class A network (IP addresses 0.0.0.0 through 127.255.255.255), the default subnet mask is 255.0.0.0.
For a Class B network (IP addresses 128.0.0.0 through 191.255.255.255), the default subnet mask is 255.255.0.0.
For a Class C network (IP addresses 192.0.0.0 through 223.255.255.255), the default subnet mask is 255.255.255.0.
For a Class D network (IP addresses 224.0.0.0 through 239.255.255.255) and a Class E network (IP addresses 240.0.0.0 through 255.255.255.255), the subnet mask is ignored.
The Default Gateway field contains default route to remote networks.
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