Epson C82315 - Manual (Page 34)

Signal
Pin
Description
A LOW pulse of
minimum width of 4
µ sec. A low indi-
cates that data has
been received and
that the printer is
ready to accept
more data.
A HIGH signal indi-
cates that the printer
cannot receive data.
The signal goes
HIGH in these
cases:
-Data entry, for
each character
--When off line or in
error state
-When serving the
IBM host and a byte
of parallel data is
received.
HIGH when the
printer is out of
paper.
Pulled up to +5v
through a 3.3K ohm
resistance.
THIS SIGNAL IS
NOT SUPPORTED
BY THE C82315*
INTERFACE. (De-
fined by many print-
ers to add
a LF to
each CR. The IBM
Direction
OUT
Parallel
Cable
Pin
10
Signal
ACKNLG
Return
Pin
28 10
OUT
29 BUSY 11 11
12 OUT
12 30 PE
13 OUT
13 SLCT
14 IN AUTO
FEED
16
17
27