Epson TM-L90 Technical Reference Manual page 68

Pass-through Connections
TM printer is connected to DM-D via serial port and DM-D is connected to the host PC via serial
port. The following table shows the application control and cable connection types.
Application
control
TM side
control setting
Xon/Xoff
DTR/DSR 1
2
Connection procedure
1. Press the connector on the end of the interface cable firmly onto the interface connector
located on the connector panel.
2. When using connectors equipped with screws, use the screws to tighten the connectors
firmly in place.
3. For interface cables equipped with a ground line, attach the ground line to the screw hole
marked "FG" on the printer.
4. Connect the other end of the interface cable to the host computer.
68 Connecting to the Host Computer and Options
Xon/Xoff
(except OPOS)
Not available
—
—
Tightening Screws
DTR/DSR
(DOS, Windows
(only OPOS))
—
Type A or B
Type A or B
RTS/CTR
(DOS, Windows (hardware
control: Windows driver))
—
Type B
Type A or B