Toshiba V Series Operation Manual page 48

Chapter 3 Setting
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(5) Register parameters according to the system configuration diagram. If the IP address
type is class B, register 172.16.64.xx (xx means the host ID, which is 20 in this
example) and the subnet mask of 255.255.192.0.
(6) Then, register the network from the product tree. Select [New (W)] with selecting the
network under the registered system.
model 2000 Ethernet Module Operation Manual