Toshiba V Series Operation Manual page 52

Chapter 3 Setting
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(7) Select [EtherLAN] from the network adding dialog(if the module is dual bus one,
select [EtherLANDouble]). Select [New (W)] with selecting the module under the
added EtherLAN.
(8) Select the EN7 module which is selected from the module adding dialog, it is
connected to EtherLAN.
model 3000 Ethernet Module / DS Connection Module Operation Manual