Epson TM-U590 Series Handbuch - Seite 2

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Epson TM-U590 Series Handbuch
The adapter can replace the existing adapter and is held in place by 2 screws.
Finding the Right Cable
The most common problem we've had with serial adapters and printers isn't the printer at all -
it's the cable! There's a wide variety of connection schemes used to connect a serial printer.
The most common is the null modem type connection where the transmit and received lines
are crossed. Epson also recommends crossing the DTR with the DSR and the CTS with the
RTS lines.
Very often the printer is attached using a internally wired adapter which converts the DB-25
connector to a phone type (RJ-11) connector. The connections can be wired inside the
housing for custom wiring options.
Note: The DB-25 cable connector on the printer is a serial connection while
the serial interface connection on the back of most computers is not a DB-25
connector but a DB-9 male. The DB-25 connectors commonly found on the
back of computers is the parallel interface. This is confusing, but it's the way it is.
DB-25 Female (printer connector)
DB-9Male (computer connector)
Epson's recommended serial Connection cabling: