Epson 5000 - Manual (Page 138)

Signal Return Signal Direction Description
Pin Pin
11 29 BUSY OUT A HIGH signal indicates the
printer cannot receive data.
The signal goes HIGH in the
following cases:
1) During data entry (for each
character)
2) During printing
3) When the PAUSE button is
pressed
4) During an error state
12 30 PE OUT A HIGH signal indicates that the
printer is out of paper,
13 SLCT OUT Pulled up to 5 V through 3.3
resistance
14 AUTO IN When this signal is LOW, the
FEED paper is automatically fed one
XT line after printing, (The signal
level can be fixed to LOW by
setting DIP switch 2-4 to on.)
15 NC Not used
16 GND - Logic ground level
17 - CHASSIS - Printer’s chassis ground, which is
GND isolated from the logic ground
18 - NC Not used
19-30 - GND - Twisted-pair return signal ground
level
31 16 INIT IN When this level becomes LOW,
the printer controller is reset to
its state when the power is first
turned an and the print buffer is
cleared, This level is normally
HIGH; its pulse width must be
more than 50 at the receiving
terminal.
7-12 Technical Specifications