Hakko MONITOUCH V7 series - Manual (Page 169)

4-18 1. Ethernet
Subnet Mask
A subnet mask is used for dividing one network address into multiple networks (subnet).
The subnet is assigned by specifying a part of the host address in the IP address as a subnet
address.
255. 255. 255. 0
1 0
11111111 11111111 11111111 00000000
Class B
Subnet mask
Host address (16)
Network address Subnet address
Network address (14)
Host address