For Lan Interface - Epson TM-T70II Technical Reference Manual

For LAN Interface

Connect the printer to a network by a LAN cable via a hub.
For the setting method of the IP address, see the TM-T70II Software User's Manual.
LAN interface connection diagram
A customer display (DM-D series) cannot be connected to the printer when the printer is
connected to the host computer. To connect the customer display, connect the printer to the
host computer via the serial interface or the USB interface.
Connecting the LAN interface cable
 When LAN cables are installed outdoors, make sure devices without proper surge
CAUTION
 Never attempt to connect the customer display cable, drawer kick-out cable, or
50
DM-D
10BASE-T/100BASE-TX
M o d u l a r
cable
TM-T70II
protection are cushioned by being connected through devices that do have surge
protection. 
Otherwise, the devices can be damaged by lightning.
the standard telephone line cable to the 10BASE-T/100BASE-TX LAN connector.
Cash drawer
TM-T70II