72 Connecting to the Host Computer and Options
 
Before turning on the printer, be sure to turn on the customer display (DM-D). If you reverse the 
order, the customer display will not be recognized correctly.
To satisfy the EMI standard, be sure to mount the ferrite core on the display module cable
. To 
mount the ferrite core, put the display module cable into the ferrite core.
3.2.4  With the Ethernet Interface (TM-L90 only)
TM printer with the Ethernet interface is connected to a network with the Ethernet cable via a 
Hub.
Note:
The Ethernet interface TM printer does not accept a customer display (DM-D). Connect the customer 
display to a POS terminal or appropriate equipment other than the printer.
Note:
When controlling the printer with OPOS, it is necessary to use exclusive control. Therefore, when using 1 
printer with several PCs, it is necessary to take into account application programming whereby a PC that 
already has the exclusive right must release it, then another PC must claim it.
Item Selection
Transmission setting Transmission speed 19200 bps
Parity None
Data word length 8 bits