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Return
Signal
Pin
Pin
13
14
15
16
17
18
19-30
31
32
33
34
Signal
Direction
OUT
SLCT
I N
AUTO
FEED
XT
NC
GND
CHAS-
S I S
GND
NC
GND
I N
I N I T
ERROR
OUT
GND
NC
13
Description
A high signal indicates that the
printer is in the selected state.
The signal goes low in the
following cases:
1) When the SLCT IN signal
goes high
2) During a printer-error state
3) When the interface card is
disabled
This signal can be fixed to
"high" with DIP Switch 1-5.
This function depends on
printer specifications.
Not used
Twisted-pair, return-signal
g r o u n d
Printer's chassis ground, which
is isolated from the logical
g r o u n d
Not used
Twisted-pair, return-signal
ground
When the signal level goes low,
the printer controller and the
interface card are reset. This
signal level is usually high; its
pulse width must be more than
50 µseconds at the receiving
terminal.
This signal level goes low when
the printer is out of paper or in
an error state.
Twisted-pair return signal
ground.
Not used
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