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Signal
Pin
Pin
10
28
11
29
12
30
13
16
17
Parallel
Signal
Cable
Pin
10
ACKNLG
BUSY
11
12
PE
13
SLCT
14
AUTO
FEED
Direction
OUT
OUT
OUT
OUT
IN
27
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.
HIGH signal indi-
A
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
LF to
a
each CR. The IBM
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