Epson ActionLaser 1400, Reference Manual

Page: 61 / 95

Signal
Return
Pin
Pin
Signal
Direction
Description
19-30
GND
Twisted-pair return signal
ground level.
31 NC Not used
32 ERROR Out This signal level goes LOW
when the printer is:
1. Out of paper
2. In an error state
33
GND
Same as for Pins 19-30
34
NC Not used
35
+5V
Pulled up to +5 V through
3.3 K
resistance.
3 6 SLCTIN
IN
Available only for
bidirectional use.
Note:
All interface conditions are based on TTL level. Both the rise and fall times of
each signal must be less than 0.2 microseconds.
Data transfer must be carried out by observing the ACKNLG or BUSY
signal. (Data transfer to this printer can be carried out only after receipt of
the
ACKNLG signal or when the level of
the
BUSY signal is LOW.)
The column heading “Direction” refers to the direction of signal flow as
viewed from
the printer.
Return denotes the twisted-pair return to be connected at signal ground
level. For the interface wiring, be sure to use a
twisted-pair cable
for
each
signal and to complete the connection on the return side.
The ACKNLG pulse width varies.
Technical Specifications
A-7