Epson 1400 Verweishandbuch
Signal
Return
Pin
Pin
Signal
Direction
Description
19-30
GND
Twisted-pair return signal
ground level.
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
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