2-1. interface connector, Serial interface, Usb interface – Epson WorkForce RP-310 User Manual

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2-2-1. Interface Connector

< D -SUB 25 Female Serial Port>

< 4 P i n “B ” Type USB Port>

- Serial interface

PIN

SIGNAL

I/O

DESCRIPTION

2

TxD

Output

Printer transmit data line RS-232C level

3

RxD

Input

Printer receive data line RS-232C level

4, 20

DTR

Output

Printer handshake to host line RS-232C level

6

DSR

Input

Data Send Ready

1, 7

GND

-

System Ground

- USB interface

PIN

SIGNAL

I/O

DESCRIPTION

1

+5V

-

+5V

2

DATA-

-

Printer transmit data line

3

DATA+

-

Printer transmit data line

4

GND

-

System Ground