Serial Interface - Epson ActionLaser Plus User Manual

Interface Specifications
Signal levels
Output signals:
Input signals:

Serial interface

The laser printer's built-in serial interface can be set for either
RS-232C or RS-422A operation. These interfaces have the following
characteristics.
Data format
Word length:
Parity:
Start bits:
Stop bits:
The data format can be set using functions and menu items in
SelecType.
Baud rate
300, 600, 1200, 2400, 4800, 9600, 19200 bits per second.
Signal level
RS-232C:
RS-422A:
B-10
Technical Specifications
V = 0
to 0.4 V
OL
V
= 2.4 to 5.0 V
O H
V
= 0 to 0.8 V
IL
V
= 2.0 to 5.0 V
IH
7 or 8 bits
0 or 1 bit (None, Odd, Even, Ignore)
1 bit
1 or 2 bits
= 2.2 to 12V
V
H
= -1.4 to -12V
V
L
V = 2.5 to 5V
H
V = 0 to 0.5V
L