Epson C824431 Manual Del Usario página 24

Pin No. Signal Name Direction*
17 TTY-TXD
TTY-TXD
24
Return
25 TTY-RXD
TTY-RXD
23
Return
Note
• The column heading "Direction" refers to the direction of
signal flow as viewed from the printer.
• All signals except TTY-TXD and TTY-RXD comply with
the EIA RS-232D standard.
High impedance ("SPACE")
Out between pin No. 17 and No. 24 or
an X-on signal sent across pin
No. 17 and No. 24 indicates that
the printer is ready to accept
data. Low impedance ("MARK")
or an X-off signal being sent
-
indicates that the printer is busy.
Operator can invert the polarity
of this signal with jumper J2.
In Input data of serial Current Loop.
-
20
Description