Table C-1 (continued). Parallel-Interface Specifications.
Parallel
Signal
Return
Cable
Pin
Pin
Signal
Pin
Direction
Description
14
—
AUTO
14
IN
This signal is NOT
FEED
supported. Defined by
many printers to add
a LF to each CR. The
IBM 5250 protocol
does not support this
signal.
15
—
NC
—
—
Not used.
16
—
GND
19
—
Logic Ground.
17
—
CGND
—
—
Chassis Ground.
18
—
NC
—
—
Not used.
19-30
—
GND
21-24
—
Twisted-pair ground
returns listed above.
31
—
INIT
16
IN
Defined to reset and
clear the printer when
LOW; the reset and
clear are NOT sup-
ported by the Card.
The IBM host can’t be
interrupted by this
signal. An ACKNLG
is generated for
handshaking.
32
—
ERROR
15
OUT
This signal goes LOW
when the printer is in
an error state.
33
—
GND
25
—
Logic Ground.
34
—
NC
—
—
Not used.
35
—
HIGH
—
—
Not used.
36
—
SLCTIN
17
—
Not supported.
124
HPIIISi TWINAX CARD